Interactive Nerve Anatomy Guide

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  • 1/86 Questions
    Idenity nerve #3 in the photo below. - ProProfs

    Idenity nerve #3 in the photo below.

    • Femoral
    • Saphenous
    • Sciatic
    • Lateral Femoral Cutaneous
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Interactive Nerve Anatomy Guide - Quiz
About This Quiz

A review to material for test 3 on peripheral nerve blocks.

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  • 2. 
    In above picture, what is nerve #2? - ProProfs

    In above picture, what is nerve #2?

    • Ulnar

    • Median

    • Radial

    • None of Above

    Correct Answer
    A. Ulnar
    Explanation
    In the given picture, nerve #2 is identified as the ulnar nerve. This can be determined by comparing the image with anatomical diagrams and recognizing the specific characteristics and location of the ulnar nerve.

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  • 3. 

    What is the advantage of doing a lower extremity block as opposed to a spinal block?

    • Fewer needle sticks for pt

    • Decreased risk of infection

    • Easier to perform for anesthesia provider

    • Fewer hemodynamic effects

    Correct Answer
    A. Fewer hemodynamic effects
    Explanation
    A lower extremity block has the advantage of causing fewer hemodynamic effects compared to a spinal block. This means that the block has less impact on the patient's blood pressure, heart rate, and overall cardiovascular system. This can be beneficial for patients who may be more sensitive to changes in their hemodynamic status, such as those with cardiovascular disease or other medical conditions. By choosing a lower extremity block instead of a spinal block, the anesthesia provider can minimize the potential hemodynamic complications and ensure a safer and more stable anesthesia experience for the patient.

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  • 4. 

    What monitoring is required when performing a Retrobulbar block on a pt?

    • ECG, O2 sat, and BP cuff

    • A-line, CVP, pulse ox, ECG

    • ECG and O2 sat only

    • BP cuff only

    Correct Answer
    A. ECG, O2 sat, and BP cuff
    Explanation
    When performing a Retrobulbar block on a patient, it is important to monitor their vital signs to ensure their safety and well-being. The ECG (electrocardiogram) helps to monitor the patient's heart rate and rhythm, while the O2 sat (oxygen saturation) measures the amount of oxygen in their blood. The BP cuff (blood pressure cuff) is used to monitor the patient's blood pressure. By monitoring these parameters, any potential complications or adverse reactions can be detected and managed promptly.

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  • 5. 

    Which of the following is the proper sequence, from proximal to distal, for the composition of the brachial plexus?

    • Trunks, Cords, Roots, Divisions, Branches

    • Cords, Roots, Branches, Trunks, Divisions

    • Roots, Trunks, Divisions, Cords, Branches

    • Branches, Divisions, Trunks, Roots, Cords

    Correct Answer
    A. Roots, Trunks, Divisions, Cords, Branches
    Explanation
    The brachial plexus is composed of five components: roots, trunks, divisions, cords, and branches. The proper sequence, from proximal to distal, for the composition of the brachial plexus is roots, trunks, divisions, cords, branches. This means that the nerve fibers first emerge from the spinal cord as roots, then merge to form trunks, which further divide into divisions, and then combine to form cords. Finally, the cords give rise to various branches that innervate different muscles and areas of the upper limb.

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  • 6. 
    In above picture, what is nerve #3? - ProProfs

    In above picture, what is nerve #3?

    • Ulnar

    • Median

    • Radial

    • None of Above

    Correct Answer
    A. Radial
    Explanation
    In the given picture, nerve #3 is identified as the radial nerve. This can be determined by comparing the image with anatomical references and identifying the nerve that corresponds to the radial nerve. The other options, ulnar and median nerves, are not depicted in the picture. Therefore, the correct answer is radial.

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  • 7. 

    Which of the following describes the anatomical landmarks used when doing an interscalene block?

    • Axillary artery below the pectoralis major muscle at the insertion of the bicep muscle.

    • The brachial pulse and medial epicondyle

    • The coracoid process, distal portion of the clavicle

    • The interscalene groove, located posterior to the clavicular insertion of the SCM.

    Correct Answer
    A. The interscalene groove, located posterior to the clavicular insertion of the SCM.
    Explanation
    The correct answer describes the anatomical landmarks used when doing an interscalene block as the interscalene groove, located posterior to the clavicular insertion of the SCM. This means that the block is performed by injecting anesthetic medication into the groove between the scalene muscles in the neck, specifically behind the clavicle where the sternocleidomastoid muscle inserts. This technique is commonly used for regional anesthesia to provide pain relief for procedures involving the shoulder and upper arm.

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  • 8. 

    The brachial plexus is formed by the nerve roots of which vertebrae in the majority of people?

    • C5-C8

    • C2-T2

    • T1-T2

    • C1-C4

    Correct Answer
    A. C5-C8
    Explanation
    The brachial plexus is a network of nerves that originates from the nerve roots of C5, C6, C7, and C8 in the majority of people. These nerve roots exit the spinal cord in the neck region and form a complex network that supplies motor and sensory innervation to the upper limb. The answer C5-C8 correctly identifies the nerve roots involved in the formation of the brachial plexus.

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  • 9. 

    Stimulation of the ulnar nerve would result in which of following actions?

    • Flexion of pinky finger and ulnar wrist deviation

    • Extension of wrist and fingers

    • Pronation of forearm and flexion of wrist

    • Contraction of deltoid muscle

    Correct Answer
    A. Flexion of pinky finger and ulnar wrist deviation
    Explanation
    Stimulation of the ulnar nerve would result in flexion of the pinky finger and ulnar wrist deviation. The ulnar nerve is responsible for innervating the muscles that control these movements. Flexion of the pinky finger refers to bending the finger towards the palm, while ulnar wrist deviation refers to moving the wrist towards the ulnar side of the forearm. This action is controlled by the ulnar nerve, which runs along the ulnar side of the forearm and hand.

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  • 10. 

    Which nerve supplies sensation to the lateral aspect of the thigh down to the knee?

    • Femoral

    • Sciatic

    • Lateral Femoral Cutaneous

    • Ilioinguinal

    Correct Answer
    A. Lateral Femoral Cutaneous
    Explanation
    The nerve that supplies sensation to the lateral aspect of the thigh down to the knee is the Lateral Femoral Cutaneous nerve. This nerve is responsible for transmitting sensory information from the outer side of the thigh to the brain. It does not supply sensation to the knee joint itself, but rather to the skin and underlying tissues of the lateral thigh.

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  • 11. 

    What is the largest nerve in the body?

    • Sciatic nerve

    • Brachial Plexus nerve

    • Femoral nerve

    • Spinal cord

    Correct Answer
    A. Sciatic nerve
    Explanation
    The sciatic nerve is the largest nerve in the body. It is a major nerve that originates from the lower back and extends down the back of each leg. It is responsible for providing motor and sensory functions to the lower limbs. Due to its size and importance, any damage or compression of the sciatic nerve can cause severe pain and affect mobility.

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  • 12. 

    Which of the following nerves provides motor enervation to the quadriceps muscle and sensation to the anterior thigh?

    • Ilioinguinal

    • Obturator

    • Lateral Femoral Cutaneous

    • Femoral

    Correct Answer
    A. Femoral
    Explanation
    The femoral nerve provides motor innervation to the quadriceps muscle and sensation to the anterior thigh.

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  • 13. 

    Blocking the lumbar plexus will block all sensory nerves of the leg and is sufficient for surgery.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    Blocking the lumbar plexus will not block all sensory nerves of the leg. While it will provide some sensory blockage, there are other nerves, such as the sciatic nerve, that innervate the leg and are not affected by blocking the lumbar plexus. Therefore, blocking the lumbar plexus alone is not sufficient for surgery involving the leg.

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  • 14. 

    Where is the proper insertion point for a femoral block (after having identified other landmarks, of course)?

    • 2 cm medial from femoral pulse

    • 2 cm caudad from femoral pulse

    • 2 cm distal from femoral pulse

    • 2 cm lateral from femoral pulse

    Correct Answer
    A. 2 cm lateral from femoral pulse
    Explanation
    The proper insertion point for a femoral block is 2 cm lateral from the femoral pulse. This means that the needle should be inserted 2 cm to the side of the femoral pulse, away from the midline of the body. This is the correct location to ensure that the block is administered in the correct area and will effectively numb the necessary nerves.

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  • 15. 

    Stimulation of the oculocardiac reflex will result in which of the following?

    • Bradycardia

    • Hypertension

    • PVC’s

    • Tachycardia

    Correct Answer
    A. Bradycardia
    Explanation
    Stimulation of the oculocardiac reflex refers to the reflex that occurs when pressure is applied to the eyeball, leading to a decrease in heart rate. This reflex is mediated by the vagus nerve, which when stimulated, causes a decrease in the heart's electrical activity and subsequently results in bradycardia. Therefore, the correct answer is bradycardia.

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  • 16. 

    You are delivering regional anesthetic to a patient when they begin to complain of feeling light headed and ringing in their ears. What should you do?

    • Slow down your rate of injection, and then administer rest of anesthetic.

    • Immediately notify MD and prepare pt for cardiac bypass, your plasma concentration is most likely too high now.

    • Immediately stop injection, start lipid infusion, monitor patient, your plasma concentration should still be low enough to reverse this.

    • Comfort the patient that this is normal to experience and deliver rest of anesthetic quickly.

    Correct Answer
    A. Immediately stop injection, start lipid infusion, monitor patient, your plasma concentration should still be low enough to reverse this.
    Explanation
    The correct answer suggests that the patient is experiencing symptoms of local anesthetic systemic toxicity (LAST), which can occur when the plasma concentration of the anesthetic is too high. Stopping the injection and starting a lipid infusion can help to reverse the effects of LAST. Monitoring the patient is important to ensure their condition improves.

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  • 17. 

    Which of the following nerves does not play a role in lower extremity nerve blockade?

    • Lateral femoral cutaneous

    • Ilioinguinal

    • Obturator

    • Femoral

    Correct Answer
    A. Ilioinguinal
    Explanation
    The ilioinguinal nerve does not play a role in lower extremity nerve blockade. This nerve primarily provides sensory innervation to the upper medial thigh and the genital region. In contrast, the other three nerves listed (lateral femoral cutaneous, obturator, and femoral) all contribute to innervation of the lower extremity and can be targeted for nerve blockade to provide pain relief or anesthesia in this region.

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  • 18. 

    The Sciatic Nerve divides to form which two nerves of lower leg? (more than one  answer)

    • Medial Fibial Nerve

    • Dorsal Digital Nerve

    • Tibial Nerve

    • Common Peroneal Nerve

    Correct Answer(s)
    A. Tibial Nerve
    A. Common Peroneal Nerve
    Explanation
    The sciatic nerve, which is the largest nerve in the body, divides into two main branches in the lower leg: the tibial nerve and the common peroneal nerve. The tibial nerve supplies sensation and motor function to the posterior compartment of the leg and the sole of the foot. The common peroneal nerve supplies sensation and motor function to the anterior and lateral compartments of the leg and the dorsum of the foot.

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  • 19. 

    Which of the following describes the landmarks used when performing an axillary block?

    • Axillary artery below the pectoralis major muscle at the insertion of the bicep muscle.

    • The brachial pulse and medial epicondyle

    • The coracoid process, distal portion of the clavicle

    • The interscalene groove, located posterior to the clavicular insertion of the SCM.

    Correct Answer
    A. Axillary artery below the pectoralis major muscle at the insertion of the bicep muscle.
    Explanation
    The correct answer describes the landmarks used when performing an axillary block as the axillary artery below the pectoralis major muscle at the insertion of the bicep muscle. This means that the injection is performed near the axillary artery, which is located below the pectoralis major muscle and at the insertion of the bicep muscle. This is a common technique used to block the nerves in the axillary region, providing anesthesia for procedures involving the arm or hand.

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  • 20. 

    COMIC RELIEF: Extreme sheep herding

    • Well, at least the bored shephards aren't doing *other* terrible things to the sheep...

    • PONG!!

    • He he he! Cute!

    • All the Above

    Correct Answer
    A. All the Above
    Explanation
    The correct answer is "All the Above". This means that all of the statements mentioned in the question are correct. The statement "Well, at least the bored shephards aren't doing *other* terrible things to the sheep" implies that the shepherds are not mistreating the sheep. The statement "PONG!!" suggests that the video might involve some sort of game or playful interaction. The statement "He he he! Cute!" indicates that the video is enjoyable and adorable. Therefore, all of these statements align with the concept of comic relief in the context of extreme sheep herding.

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  • 21. 

    You are the SRNA for Mr. Pret who is having a carpal tunnel release today. The beir block was done and surgeon was done within 5 minutes. Trying to be helpful, the tech deflates your cuff for you once the procedure is finished. You are now crapping your pants because what might happen?

    • Increased risk for Malignant hyperthermia

    • Increases risk of permament nerve damage to arm

    • Increases risk of local anesthetic toxicity

    • All the above

    Correct Answer
    A. Increases risk of local anesthetic toxicity
    Explanation
    Deflating the cuff after a carpal tunnel release procedure increases the risk of local anesthetic toxicity. This is because the cuff helps to limit the systemic absorption of the local anesthetic used during the procedure. When the cuff is deflated, there is a higher chance of the anesthetic spreading throughout the body, potentially leading to toxic effects. It is important to keep the cuff inflated until the appropriate time to minimize this risk.

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  • 22. 

    How many nerves must be blocked for a properly performed ankle block?

    • 5

    • 4

    • 1

    • 3

    Correct Answer
    A. 5
    Explanation
    A properly performed ankle block requires blocking five nerves. This suggests that multiple nerves in the ankle region need to be blocked in order to achieve the desired effect.

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  • 23. 
    Idenity nerve #1 in the photo below. - ProProfs

    Idenity nerve #1 in the photo below.

    • Saphenous

    • Laterial Femoral Cutaneous

    • Sciatic

    • Femoral

    Correct Answer
    A. Femoral
    Explanation
    Based on the options provided, the correct answer is Femoral. The femoral nerve is a major nerve in the leg that innervates the muscles of the anterior thigh and provides sensation to the front and medial side of the thigh and leg. It is the largest branch of the lumbar plexus and is located in the femoral triangle, which is a region in the upper thigh.

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  • 24. 

    A retrobulbar block typically involves use of what gauge of needle?

    • 25

    • 22

    • 20

    • 18

    Correct Answer
    A. 25
    Explanation
    A retrobulbar block is a type of local anesthesia used during eye surgery. It involves injecting anesthetic medication behind the eyeball to numb the eye and surrounding tissues. The gauge of the needle refers to its thickness. In this case, the correct answer is 25, which means that a 25-gauge needle is typically used for a retrobulbar block. The smaller the gauge number, the thicker the needle. Using a thinner needle reduces the risk of complications and discomfort for the patient.

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  • 25. 
    In above picture, what is nerve #1? - ProProfs

    In above picture, what is nerve #1?

    • Ulnar

    • Median

    • Radial

    • None of Above

    Correct Answer
    A. Median
    Explanation
    In the given picture, nerve #1 is identified as the median nerve.

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  • 26. 

    When injecting local anesthetic for a femoral block you should stop and re-aspirate every…

    • 5 ml’s

    • 2-3 ml’s

    • 10 ml’s

    • You don’t have to after the initial aspiration.

    Correct Answer
    A. 5 ml’s
    Explanation
    When injecting local anesthetic for a femoral block, it is recommended to stop and re-aspirate every 5 ml's. This is done to ensure that the needle is not in a blood vessel, as injecting the anesthetic into a blood vessel can lead to complications. By stopping and re-aspirating, the healthcare provider can confirm that the needle is in the correct position before continuing with the injection.

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  • 27. 

    Which of the following is not a complication commonly associated with interscalane blocks?

    • Phrenic Nerve blockade

    • Accidental vertebral artery injection

    • Horners Syndrome

    • All are associated with interscalane blocks

    Correct Answer
    A. All are associated with interscalane blocks
    Explanation
    All of the complications listed (phrenic nerve blockade, accidental vertebral artery injection, and Horner's Syndrome) are commonly associated with interscalane blocks.

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  • 28. 

    What would be the appropriate choice of LA to use for a Bier Block?

    • Lidocaine 0.5% with epi

    • Bupivacaine 0.75% plain

    • Lidocaine 0.5% plain

    • Bupivacaine 0.75% with epi

    Correct Answer
    A. Lidocaine 0.5% plain
    Explanation
    Lidocaine 0.5% plain would be the appropriate choice of local anesthetic (LA) to use for a Bier Block. A Bier Block is a regional anesthesia technique used for procedures on the forearm, hand, or fingers. Lidocaine is a commonly used LA for Bier Blocks because it provides effective anesthesia in the desired area without the need for a vasoconstrictor like epinephrine (epi). The use of a vasoconstrictor in this case could potentially cause vasoconstriction in the extremity, leading to decreased blood flow and potential complications. Bupivacaine, on the other hand, is a long-acting LA and may not be suitable for a Bier Block, which requires a shorter duration of anesthesia.

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  • 29. 

    You are performing a femoral block and are giving a test dose of Lidocaine 2% with epi. What would you expect to be the first signs of accidental intravascular injection?

    • Increase in pt HR

    • Pt c/o ringing in ears

    • Seizures

    • Pt C/o numbness in extremity

    Correct Answer
    A. Increase in pt HR
    Explanation
    The first signs of accidental intravascular injection of Lidocaine with epi would be an increase in patient heart rate. This is because Lidocaine with epi is a vasoconstrictor, and when it enters the bloodstream, it causes constriction of blood vessels, leading to an increase in heart rate as the body tries to compensate for the decreased blood flow. This can be a warning sign to the healthcare provider that the injection has entered the bloodstream and immediate action should be taken to prevent any further complications.

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  • 30. 

    A patient with a MCN block would not be able to perform which of the following actions?

    • Closing their hand

    • Leg Lunges

    • Bicep Curl

    • Wrist dorsiflexion

    Correct Answer
    A. Bicep Curl
    Explanation
    A patient with a MCN block would not be able to perform a Bicep Curl because the Musculocutaneous nerve (MCN) innervates the muscles responsible for flexing the elbow, including the biceps brachii. If the MCN is blocked or damaged, the patient would experience weakness or paralysis in the biceps, making it difficult or impossible to perform a Bicep Curl.

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  • 31. 
    Idenity nerve #6 in the photo below. - ProProfs

    Idenity nerve #6 in the photo below.

    • Tibial

    • Common Peroneal

    • Sciatic

    • Femoral

    Correct Answer
    A. Tibial
    Explanation
    The correct answer is Tibial. The tibial nerve is a major branch of the sciatic nerve and is responsible for innervating the posterior compartment of the leg and the sole of the foot. It runs down the back of the leg, behind the knee, and then branches out into smaller nerves that supply the muscles and skin of the lower leg and foot. In the photo, the tibial nerve can be identified as the nerve located in the posterior compartment of the leg.

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  • 32. 

    Which of the following properly describes the musculocutaneous nerve?

    • It supplies motor enervation to the deltoid muscle it also supplies sensory enervation to the same area both anteriorly and posteriorly

    • Sensory it supplies the thumb, index, middle and half of the ring finger on the palmar(bolar) side on the dorsum of the hand it supplies the distal 3rd of the thumb and index fingers.

    • Stimulation of the nerve causes extension of the wrist.

    • Provides motor enervation to biceps and coracobrachialis, sensory to lateral aspect of forearm.

    Correct Answer
    A. Provides motor enervation to biceps and coracobrachialis, sensory to lateral aspect of forearm.
    Explanation
    The musculocutaneous nerve provides motor innervation to the biceps and coracobrachialis muscles, as well as sensory innervation to the lateral aspect of the forearm. It does not supply motor innervation to the deltoid muscle or cause extension of the wrist. It also does not supply sensory innervation to the thumb, index, middle, and half of the ring finger on the palmar side or the dorsum of the hand.

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  • 33. 

    Which of the following supplies motor and sensory to the inner aspect of the thigh?

    • Obturator

    • Femoral

    • Lateral Femoral Cutaneous

    • Ilioinguinal

    Correct Answer
    A. Obturator
    Explanation
    The obturator nerve supplies motor and sensory innervation to the inner aspect of the thigh.

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  • 34. 

    When performing an eschmark wrap for a bier block you would first inflate the ____ cuff of the tourniquet and then the ____ cuff.

    • Distal, Proximal

    • Inflate both at the same time

    • Proximal, Distal

    Correct Answer
    A. Distal, Proximal
    Explanation
    When performing an eschmark wrap for a bier block, it is important to inflate the distal cuff of the tourniquet first and then the proximal cuff. This sequence ensures that the blood flow is restricted in the desired area, allowing for a successful bier block procedure. Inflating the distal cuff first helps to prevent blood from pooling in the limb, while inflating the proximal cuff afterwards helps to further restrict blood flow and create a bloodless surgical field.

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  • 35. 

    Stimulation of the median nerve would result in which of following actions?

    • Extension of wrist and fingers

    • Flexion of pinky finger and ulnar wrist deviation

    • Pronation of forearm and flexion of wrist

    • Contraction of deltoid muscle

    Correct Answer
    A. Pronation of forearm and flexion of wrist
    Explanation
    Stimulation of the median nerve would result in pronation of the forearm and flexion of the wrist. The median nerve innervates the muscles that are responsible for these actions. Pronation of the forearm refers to the rotation of the forearm so that the palm faces downwards, while flexion of the wrist refers to bending the wrist towards the palm.

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  • 36. 

    The lumbar plexus is derived from the ventral rami of…

    • L5-S3

    • T10-T12

    • L1-L4

    • C7-T3

    Correct Answer
    A. L1-L4
    Explanation
    The lumbar plexus is derived from the ventral rami of spinal nerves L1-L4. This means that the nerves originating from these levels of the spinal cord come together to form the lumbar plexus. The lumbar plexus is responsible for innervating various muscles and structures in the lower abdomen, pelvis, and lower limbs.

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  • 37. 

    Which of the following is not one of anatomical landmarks required to perform a femoral block?

    • Anterior Superior Iliac spine

    • Sacral Hiatus

    • The femoral artery

    • Superior lateral corner of pubic tubercle

    Correct Answer
    A. Sacral Hiatus
    Explanation
    The Sacral Hiatus is not one of the anatomical landmarks required to perform a femoral block. The femoral block is a regional anesthesia technique used to provide pain relief in the lower limb. The anatomical landmarks required for this procedure include the Anterior Superior Iliac spine, the femoral artery, and the superior lateral corner of the pubic tubercle. The Sacral Hiatus is not relevant to this procedure as it is a landmark used for other purposes, such as performing a caudal epidural block.

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  • 38. 
    Idenity nerve #5 in the photo below. - ProProfs

    Idenity nerve #5 in the photo below.

    • Tibial

    • Sural

    • Saphenous

    • Common Peroneal

    Correct Answer
    A. Common Peroneal
    Explanation
    The correct answer is Common Peroneal. The photo likely shows a diagram or image of the leg, and the question asks to identify nerve #5 in the photo. Among the given options, the Common Peroneal nerve is the fifth nerve mentioned.

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  • 39. 

    Which of the following complications would not be due to technique of the anesthesia provider?

    • Neurapraxia

    • Pneumothorax

    • Vasovagal response

    • Compartment syndrome

    Correct Answer
    A. Vasovagal response
    Explanation
    A vasovagal response is not a complication that would be caused by the technique of the anesthesia provider. A vasovagal response is a sudden drop in heart rate and blood pressure, often triggered by emotional or physical stress. It is a reflex response of the body's autonomic nervous system and is not directly related to anesthesia techniques.

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  • 40. 

    The sciatic nerve arises from which nerve roots?

    • L1-L3

    • L4-S3

    • S3-S5

    • T12-L2

    Correct Answer
    A. L4-S3
    Explanation
    The correct answer is L4-S3. The sciatic nerve is formed by nerve roots originating from the fourth lumbar vertebra (L4) to the third sacral vertebra (S3). These nerve roots come together to form the largest nerve in the body, the sciatic nerve, which provides motor and sensory innervation to the lower limbs.

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  • 41. 

    Stimulation of the radial nerve at level of elbow would result in which of the following?

    • Extension of wrist and fingers

    • Pronation of forearm and flexion of wrist

    • Flexion of pinky finger and ulnar wrist deviation

    • Contraction of deltoid muscle

    Correct Answer
    A. Extension of wrist and fingers
    Explanation
    Stimulation of the radial nerve at the level of the elbow would result in the extension of the wrist and fingers. The radial nerve is responsible for innervating the extensor muscles of the forearm, which are responsible for extending the wrist and fingers. Therefore, when the radial nerve is stimulated at the level of the elbow, it would cause the extension of the wrist and fingers.

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  • 42. 

    A patient experiencing numbness of posterior forearm, thumb, and first two digits would most have a block of which nerve?

    • Ulnar

    • Radial

    • Medial

    • Obturator

    Correct Answer
    A. Radial
    Explanation
    A patient experiencing numbness of the posterior forearm, thumb, and first two digits would most likely have a block of the radial nerve. The radial nerve supplies sensation to these areas, and a blockage of this nerve can result in numbness or loss of sensation in these specific regions.

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  • 43. 

    The Ulnar nerve arises from the inferior roots of which vertebrae?

    • C5-C6

    • C6-C8

    • C2-C4

    • C8-T1

    Correct Answer
    A. C8-T1
    Explanation
    The ulnar nerve arises from the inferior roots of the C8 and T1 vertebrae.

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  • 44. 

    Where would you perform a transtracheal block?

    • 2 cm caudad to Styloid process posterior to angle of jaw

    • Directly above greater cornu of Hyoid bone

    • Posterior to Tonsillar pillars

    • Through the Cricothyroid membrane

    Correct Answer
    A. Through the Cricothyroid membrane
    Explanation
    A transtracheal block is performed through the cricothyroid membrane. This is a procedure where a local anesthetic is injected into the trachea to block the sensation of pain. The cricothyroid membrane is located between the cricoid cartilage and the thyroid cartilage in the neck. It is a relatively easy and safe access point to the trachea, making it a common site for performing transtracheal blocks.

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  • 45. 

    The lumbar plexus forms all of the following except what?

    • Lateral femoral cutaneous nerve

    • Femoral nerve

    • Obturator nerve

    • Sciatic Nerve

    Correct Answer
    A. Sciatic Nerve
    Explanation
    The lumbar plexus is a network of nerves that originates from the lower back and supplies the lower abdomen, pelvis, and legs. It is responsible for innervating various muscles and providing sensory information from these areas. The lateral femoral cutaneous nerve, femoral nerve, and obturator nerve are all branches of the lumbar plexus. However, the sciatic nerve is not a part of the lumbar plexus. It is formed by the fusion of nerve roots from the lumbar and sacral plexuses and primarily innervates the muscles of the posterior thigh and leg.

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  • 46. 

    Which of the following nerve blocks is most effective for treatment of pain from knee surgery?

    • Sciatic

    • Lateral Femoral Cutaneous

    • Femoral

    • Obturator

    Correct Answer
    A. Femoral
    Explanation
    The femoral nerve block is the most effective for treating pain from knee surgery. The femoral nerve supplies sensation to the front of the thigh and knee, and blocking this nerve can provide significant pain relief. This block is commonly used for postoperative pain management after knee surgery, as it can provide analgesia to the surgical site and allow for early mobilization and rehabilitation. By targeting the femoral nerve, patients can experience decreased pain and improved overall recovery following knee surgery.

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  • 47. 

    In the cervical region nerve roots exit _____ the vertebrae for which they are named, but starting in the Thoracic region nerve roots exit _____ the vertebrae for which they are names.

    • Below, above

    • Above, below

    • Beside, above

    • Below, Beside

    Correct Answer
    A. Above, below
    Explanation
    In the cervical region, nerve roots exit above the vertebrae for which they are named. However, in the thoracic region, nerve roots exit below the vertebrae for which they are named.

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  • 48. 

    Which nerve can be located posterior to the medial epicondyle at the elbow?

    • Median

    • Scalene

    • Radial

    • Ulnar

    Correct Answer
    A. Ulnar
    Explanation
    The ulnar nerve can be located posterior to the medial epicondyle at the elbow. This nerve travels along the inner side of the forearm and can be easily palpated behind the elbow joint. It is responsible for providing sensation to the little finger and part of the ring finger, as well as controlling certain muscles in the hand.

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  • 49. 

    Stimulation of the tibial nerve will result in what action?

    • Wrist and thumb flexion

    • Foot dorsiflexion

    • Twitching of lateral thigh

    • Plantar flexion

    Correct Answer
    A. Plantar flexion
    Explanation
    Stimulation of the tibial nerve will result in plantar flexion. The tibial nerve is a branch of the sciatic nerve and innervates the muscles in the posterior compartment of the leg, including the gastrocnemius and soleus muscles. When the tibial nerve is stimulated, it causes these muscles to contract, leading to plantar flexion of the foot. Plantar flexion is the movement of pointing the foot downward, as in standing on tiptoes.

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Quiz Review Timeline (Updated): Mar 21, 2023 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Apr 14, 2009
    Quiz Created by
    Scottishduffy
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