Test Yourself About Muscles With Online Quiz
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Do you know how many muscles are there in our body? What is the strongest muscle in the human body? Check out our online quiz to test yourself and learn interesting facts as you play.
- 1.
What is the origin of the sternocleidomastoid?
- A.
Sternum and Clavicle
- B.
Mastoid
- C.
Xiphoid
- D.
Iliac Crest
Correct Answer
A. Sternum and ClavicleExplanation
The sternocleidomastoid muscle originates from the sternum (breastbone) and clavicle (collarbone). It is a large muscle located in the front of the neck that helps with various movements of the head and neck.Rate this question:
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- 2.
What is the insertion of the sternocleidomastoid?
- A.
Central tendon
- B.
Superior vertebral border of scapula
- C.
Mastoid
- D.
Xiphoid
Correct Answer
C. MastoidExplanation
The insertion of the sternocleidomastoid muscle is the mastoid process of the temporal bone. This muscle originates from the sternum and clavicle, and its insertion at the mastoid process allows it to rotate and flex the head and neck.Rate this question:
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- 3.
What is the action of the sternocleidomastoid?
- A.
Cervical extension
- B.
Cervical flexion
- C.
Rotation same side
- D.
Option 4
Correct Answer
A. Cervical extensionExplanation
The action of the sternocleidomastoid muscle is cervical flexion.Rate this question:
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- 4.
What is the sternocleidomastoid innervated by?
- A.
Iliohypogastric, ilioinguinal, T8-T12
- B.
Accessory, C2-C3
- C.
Intercostals
- D.
Dorsal scapular
Correct Answer
B. Accessory, C2-C3Explanation
The sternocleidomastoid muscle is innervated by the accessory nerve (cranial nerve XI) and the cervical spinal nerves C2 and C3.Rate this question:
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- 5.
Where does the rectus abdominis originate?
- A.
Pubic crest and symphysis
- B.
Lower 8 ribs
- C.
Iliac Crest, inguinal ligament
- D.
Cartilage of last 6 ribs
Correct Answer
A. Pubic crest and symphysisExplanation
The rectus abdominis is a paired muscle that is located in the anterior abdominal wall. It is responsible for flexing the trunk and compressing the abdominal contents. The muscle originates from the pubic crest and symphysis, which are located in the lower part of the pelvis. This origin allows the muscle to have a strong attachment and provide stability to the pelvis and lower abdomen.Rate this question:
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- 6.
Where does the rectus abdominis insert?
- A.
Xiphoid, linea alba
- B.
Cartilage of ribs 1-3 and xiphoid
- C.
Cartilage of ribs 5-7 and xiphoid
- D.
Cartilage of last 3-4 ribs
Correct Answer
C. Cartilage of ribs 5-7 and xiphoidExplanation
The rectus abdominis is a long, flat muscle that extends vertically along the front of the abdomen. It originates from the pubic bone and inserts into the cartilage of ribs 5-7 and the xiphoid process. This means that the muscle attaches to the lower portion of the ribcage and the small bone at the bottom of the sternum.Rate this question:
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- 7.
What is the action of the rectus abdominis?
- A.
Compresses abdomen and flexes vertebral column
- B.
Expands abdomen and extends vertebral column
- C.
Option 3
- D.
Option 4
- E.
Option 5
Correct Answer
A. Compresses abdomen and flexes vertebral columnExplanation
The rectus abdominis is a paired muscle located in the anterior abdominal wall. Its main action is to compress the abdomen, which helps in various activities like coughing, sneezing, and defecation. Additionally, it also flexes the vertebral column, which means it helps in bending the spine forward. This muscle is commonly known as the "six-pack" muscle and is responsible for maintaining posture and providing stability to the trunk.Rate this question:
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- 8.
What is the rectus abdominis innervated by?
- A.
C2-C4
- B.
T7-T12
- C.
T8-T12
Correct Answer
A. C2-C4Explanation
The rectus abdominis is innervated by the thoracic spinal nerves T7-T12.Rate this question:
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- 9.
Where does the external oblique originate?
- A.
Pubic crest and symphysis
- B.
Iliac crest
- C.
Lower 8 ribs
- D.
Inguinal ligament
Correct Answer
C. Lower 8 ribsExplanation
The external oblique muscle originates from the lower 8 ribs. This muscle is located on the sides of the abdomen and plays a role in flexing and rotating the trunk. The lower 8 ribs serve as the attachment point for the external oblique muscle, allowing it to perform its functions effectively.Rate this question:
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- 10.
Where does the external oblique insert?
- A.
Cartilage of ribs 5-7
- B.
Iliac crest, linea alba
- C.
Cartilage of last 3 ribs
- D.
Cartilage of last 6 ribs
Correct Answer
B. Iliac crest, linea albaExplanation
The external oblique muscle inserts into the iliac crest and linea alba. The iliac crest is the upper curved border of the hip bone, while the linea alba is a fibrous band that runs vertically down the midline of the abdomen. The external oblique muscle is responsible for various movements of the trunk, including rotation and bending sideways. Its insertion at the iliac crest and linea alba allows it to exert force and contribute to these movements.Rate this question:
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- 11.
What is the action of external oblique?
- A.
Together compress abdomen, singly laterally flex vertebral column
- B.
Singly laterally flex vertebral column
Correct Answer
A. Together compress abdomen, singly laterally flex vertebral columnExplanation
The external oblique muscle is responsible for both compressing the abdomen and laterally flexing the vertebral column. When both sides of the muscle contract together, they help to compress the abdomen, providing support and stability to the core. When only one side contracts, it laterally flexes or bends the vertebral column to the same side. This action allows for movements such as side bending or twisting of the torso.Rate this question:
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- 12.
What is the external oblique innervated by?
- A.
T7-T12
- B.
T7-T12, iliohypogastric
- C.
T8-T12
- D.
Ilioinguinal
Correct Answer
B. T7-T12, iliohypogastricExplanation
The external oblique muscle is innervated by the T7-T12 spinal nerves and the iliohypogastric nerve. These nerves provide motor and sensory innervation to the muscle, allowing it to contract and sense stimuli.Rate this question:
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- 13.
Where does the internal oblique originate?
- A.
Iliac crest, inguinal ligament
- B.
Iliac crest, inguinal ligament, cartilage of last 6 ribs
- C.
Cartilage of ribs 5-7 and xiphoid
- D.
Pubic crest and symphysis
Correct Answer
A. Iliac crest, inguinal ligamentExplanation
The internal oblique muscle originates from the iliac crest and the inguinal ligament.Rate this question:
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- 14.
Where does the internal oblique insert?
- A.
Cartilage of first 3 ribs
- B.
Cartilage of last 3-4 ribs
- C.
Xiphoid, linea alba
- D.
Cartilage of ribs 5-7 and xiphoid
Correct Answer
B. Cartilage of last 3-4 ribsExplanation
The internal oblique muscle inserts into the cartilage of the last 3-4 ribs.Rate this question:
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- 15.
What is the action of the internal oblique?
- A.
Together compress abdomen, singly laterally flex vertebral column
- B.
Singly compress abdomen, together flex vertebral column
Correct Answer
A. Together compress abdomen, singly laterally flex vertebral columnExplanation
The internal oblique muscle is responsible for compressing the abdomen when both sides contract simultaneously. When only one side contracts, it laterally flexes the vertebral column. This means that the correct answer is "together compress abdomen, singly laterally flex vertebral column".Rate this question:
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- 16.
What is the internal oblique innervated by?
- A.
T8-T12, iliohypogastric, ilioinguinal
- B.
T7-T12
- C.
Dorsal scapular
- D.
Thoracodorsal
Correct Answer
A. T8-T12, iliohypogastric, ilioinguinalExplanation
The internal oblique muscle is innervated by the T8-T12 spinal nerves, as well as the iliohypogastric and ilioinguinal nerves. These nerves provide the necessary motor and sensory input to the muscle, allowing it to contract and perform its functions. The T8-T12 spinal nerves originate from the thoracic region of the spinal cord and supply the muscles and skin of the abdominal wall. The iliohypogastric and ilioinguinal nerves also arise from the spinal cord and provide innervation to the lower abdomen and groin region.Rate this question:
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- 17.
Where does the transversus abdominis originate?
- A.
Pubic crest and symphysis
- B.
Iliac crest, inguinal ligament, cartilage of last 6 ribs
- C.
Cartilage of last 3-4 ribs
- D.
Xiphoid, cartilage of last 6 ribs
Correct Answer
B. Iliac crest, inguinal ligament, cartilage of last 6 ribsExplanation
The transversus abdominis muscle originates from the iliac crest, inguinal ligament, and cartilage of the last 6 ribs. This means that it attaches to these structures and originates from them, allowing it to play a role in stabilizing the trunk and compressing the abdominal contents.Rate this question:
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- 18.
Where does the transversus abdominis insert?
- A.
Xiphoid, linea alba
- B.
Cartilage of last 3-4 ribs
- C.
Inferior border of rib below
- D.
Superior vertebral border of scapula
Correct Answer
A. Xiphoid, linea albaExplanation
The transversus abdominis muscle inserts into the xiphoid and linea alba. The xiphoid is a small cartilaginous extension at the lower end of the sternum, while the linea alba is a fibrous band that runs vertically in the midline of the abdomen. These insertions allow the transversus abdominis to contribute to the support and stabilization of the abdominal wall.Rate this question:
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- 19.
WHat is the action of the transversus abdominis?
- A.
Depress ribs
- B.
Compress abdomen
- C.
Expand abdomen
- D.
Evelate scapula
Correct Answer
B. Compress abdomenExplanation
The action of the transversus abdominis is to compress the abdomen. This muscle is located deep within the abdomen and plays a crucial role in stabilizing the core and providing support to the spine. When the transversus abdominis contracts, it helps to flatten and tighten the abdominal area, which can be beneficial for activities that require core strength and stability, such as lifting heavy objects or maintaining good posture.Rate this question:
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- 20.
What is the transversus abdominis innervated by?
- A.
T8-T12, iliohypogastric, ilioguinal
- B.
T7-T12, iliohypogastric
- C.
Accessory nerve
- D.
Radial nerve
Correct Answer
A. T8-T12, iliohypogastric, ilioguinalExplanation
The transversus abdominis muscle is innervated by the T8-T12 spinal nerves as well as the iliohypogastric and ilioguinal nerves.Rate this question:
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- 21.
Where does the diaphragm originate?
- A.
Xiphoid
- B.
Mastoid
- C.
Occipital, spines c7-t12
- D.
Superior c4-c5
Correct Answer
A. XiphoidExplanation
The diaphragm originates from the xiphoid, which is a small, cartilaginous extension at the lower end of the sternum. It is responsible for separating the thoracic cavity from the abdominal cavity and plays a crucial role in the process of respiration.Rate this question:
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- 22.
Where does the diaphragm insert?
- A.
Superior vertebral border of scapula
- B.
Superior border of rib below
- C.
Central tendon
- D.
Vertebral border of scapula below spine
Correct Answer
C. Central tendonExplanation
The diaphragm inserts into the central tendon.Rate this question:
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- 23.
What is the action of the diaphragm?
- A.
Pulls central tendon increase thorax length during inspiration
- B.
Elevates ribs, increases thorax lateral and anteroposterior
- C.
Depresses ribs, decreases thorax lateral and anteroposterior
- D.
Option 4
Correct Answer
A. Pulls central tendon increase thorax length during inspirationExplanation
The action of the diaphragm is to pull the central tendon and increase thorax length during inspiration.Rate this question:
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- 24.
What is the diaphragm innervated by?
- A.
Accessory nerve
- B.
Radial nerve
- C.
Phrenic nerve
- D.
C3-C4
Correct Answer
C. Phrenic nerveExplanation
The diaphragm is innervated by the phrenic nerve. This nerve originates from the C3-C5 nerve roots in the cervical spine and travels down to the diaphragm. It provides the main motor innervation to the diaphragm, allowing for its contraction and relaxation during breathing. The accessory nerve is responsible for innervating the trapezius and sternocleidomastoid muscles, while the radial nerve supplies the muscles of the posterior arm and forearm. Therefore, these nerves are not directly involved in the innervation of the diaphragm.Rate this question:
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- 25.
Where do the external intercostals originate?
- A.
Superior border of rib below
- B.
Inferior border of ribs above
- C.
Spines t2-t5
- D.
Superior c4-c5
Correct Answer
B. Inferior border of ribs aboveExplanation
The external intercostals originate from the inferior border of the ribs above.Rate this question:
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- 26.
Where do the external intercostals insert?
- A.
Superior vertebral border of scapula
- B.
Central tendon
- C.
Clavicle, acromion, scapula spine
- D.
Superior border of rib below
Correct Answer
D. Superior border of rib belowExplanation
The external intercostals are muscles located between the ribs. They run obliquely downwards and forwards. They attach to the superior border of the rib below, which means that they insert onto the upper edge of the rib that is situated immediately below them. This attachment allows the external intercostals to elevate the rib cage during inspiration, aiding in the process of breathing.Rate this question:
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- 27.
What is the action of the external intercostals?
- A.
Depresses ribs, decreases thorax lateral and anteroposterior
- B.
Elevates ribs, increases thorax lateral and anteroposterior
- C.
Elevates scapula and rotates down
- D.
Pulls central tendon increases thorax length
Correct Answer
B. Elevates ribs, increases thorax lateral and anteroposteriorExplanation
The action of the external intercostals is to elevate the ribs, which increases the lateral and anteroposterior dimensions of the thorax.Rate this question:
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- 28.
What are the external intercostals innervated by?
- A.
Accessory nerve
- B.
Phrenic
- C.
Dorsal scapular
- D.
Intercostals
Correct Answer
D. IntercostalsExplanation
The external intercostals are innervated by the intercostal nerves. These nerves are located between the ribs and provide motor and sensory innervation to the muscles and skin of the intercostal spaces. The intercostal nerves originate from the spinal cord and run along the lower border of each rib. They are responsible for the contraction of the external intercostal muscles during inspiration, helping to elevate the ribs and expand the thoracic cavity.Rate this question:
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- 29.
What is the action of the internal intercostals?
- A.
Elevates ribs, increases thorax lateral and anteroposterior
- B.
Depresses ribs, decreases thorax lateral and anteroposterior
- C.
Increases thorax length during inspiration
Correct Answer
B. Depresses ribs, decreases thorax lateral and anteroposteriorExplanation
The action of the internal intercostals is to depress the ribs, which means they pull the ribs downward. This action results in a decrease in the lateral and anteroposterior dimensions of the thorax.Rate this question:
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- 30.
Where does the trapezius originate?
- A.
Spines t2-t5
- B.
Superior c4-c5
- C.
Occipital, spines c7-t12
- D.
Superior border of the rib below
Correct Answer
C. Occipital, spines c7-t12Explanation
The trapezius muscle originates from the occipital bone and the spinous processes of the seventh through twelfth thoracic vertebrae (C7-T12).Rate this question:
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- 31.
Where does the trapezius insert?
- A.
Clavicle, acromion, scapula spine
- B.
Humerus
- C.
Superior vertebral border of scapula
Correct Answer
A. Clavicle, acromion, scapula spineExplanation
The trapezius muscle inserts into the clavicle, acromion, and scapular spine. This means that the muscle attaches to these specific areas of the bones.Rate this question:
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- 32.
What is the action of the trapezius?
- A.
Elevates clavicle and head
- B.
Adducts- rotates- elevates- depresses scapula
- C.
Elevates scapula and rotates down
- D.
A and B
- E.
All of the above
Correct Answer
D. A and BExplanation
The action of the trapezius muscle includes elevating the clavicle and head, as well as adducting, rotating, elevating, and depressing the scapula. Therefore, the correct answer is A and B.Rate this question:
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- 33.
What innervates the trapezius?
- A.
Phrenic nerve
- B.
Medial/lateral pectoral
- C.
Accessory, C3-C4
- D.
Intercostals
Correct Answer
C. Accessory, C3-C4Explanation
The trapezius muscle is innervated by the accessory nerve, specifically the branches originating from the C3 and C4 spinal nerves. The accessory nerve controls the movement of the trapezius muscle, which is responsible for various movements of the shoulder and neck, such as shrugging the shoulders and rotating the head.Rate this question:
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- 34.
Where does the rhomboid major originate?
- A.
Superior c4-c5
- B.
Occipital
- C.
Sternum
- D.
Spines t2-t5
Correct Answer
D. Spines t2-t5Explanation
The rhomboid major muscle originates from the spines of the second to fifth thoracic vertebrae (T2-T5).Rate this question:
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- 35.
Where does the rhomboid major insert?
- A.
Vertebral border of scapula below spine
- B.
Inferior border of rib below
- C.
Mastoid
- D.
Xiphoid
Correct Answer
A. Vertebral border of scapula below spineExplanation
The rhomboid major muscle inserts on the vertebral border of the scapula below the spine. This means that the muscle attaches to the scapula bone along its inner edge, specifically below the spine of the scapula.Rate this question:
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- 36.
What is the action of rhomboid major?
- A.
Abduct scapula
- B.
Laterally rotate scapula
- C.
Adduct scapula and rotate down
- D.
Medially rotate scapula
Correct Answer
C. Adduct scapula and rotate downExplanation
The action of the rhomboid major is to adduct the scapula and rotate it downward. This means that the muscle pulls the scapula towards the midline of the body and also helps in rotating it downwards.Rate this question:
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- 37.
What innervates the rhomboid major?
- A.
Accessory
- B.
Phrenic
- C.
Radial
- D.
Dorsal scapular
Correct Answer
D. Dorsal scapularExplanation
The rhomboid major muscle is innervated by the dorsal scapular nerve.Rate this question:
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- 38.
WHere does the levator scapulae originate?
- A.
Spines t2-t5
- B.
Superior c4-c5
- C.
Sternum, clavicle
- D.
Mastoid process
Correct Answer
B. Superior c4-c5Explanation
The levator scapulae muscle originates from the superior aspect of the C4-C5 vertebrae.Rate this question:
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- 39.
Where does the levator scapulae insert?
- A.
Superior vertebral border of scapula
- B.
Sternum, clavicle
- C.
Mastoid
Correct Answer
A. Superior vertebral border of scapulaExplanation
The levator scapulae muscle inserts into the superior vertebral border of the scapula. This means that the muscle attaches to the upper border of the scapula bone, which is located on the back side of the shoulder. The levator scapulae muscle helps to elevate and rotate the scapula, allowing for movements of the shoulder and upper back.Rate this question:
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- 40.
What is the action of the levator scapulae
- A.
Adducts scapula and rotates down
- B.
Elevates scapula and rotates down
- C.
Elevates the head
- D.
Cervical flexion
Correct Answer
B. Elevates scapula and rotates downExplanation
The levator scapulae is a muscle located in the neck and upper back region. Its main action is to elevate the scapula, which means it helps to lift the shoulder blade towards the ear. Additionally, it also helps in rotating the scapula downwards. Therefore, the correct answer is "elevates scapula and rotates down".Rate this question:
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- 41.
Where does the pectoralis major originate?
- A.
Acromial extremity of clavicle
- B.
Spines t7-t12
- C.
Clavicle, sternum, cartilage of ribs 2-6
- D.
Supraspinous fossa of scapula
Correct Answer
C. Clavicle, sternum, cartilage of ribs 2-6Explanation
The pectoralis major muscle originates from the clavicle, sternum, and cartilage of ribs 2-6.Rate this question:
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- 42.
Where does the pectoralis major inserT?
- A.
Greater tubercle, bicip groove
- B.
Deltoid tuberosity of humerus
- C.
Greater tubercle of humerus
- D.
Bicip groove
Correct Answer
A. Greater tubercle, bicip grooveExplanation
The pectoralis major muscle inserts on the greater tubercle and bicipital groove of the humerus. This means that the muscle attaches to these specific points on the upper arm bone.Rate this question:
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- 43.
What is the action of the pectoralis major?
- A.
Extends, laterally rotates humerus
- B.
Flex, medially rotates, and adducts the humerus
- C.
Flexes and supinates the forearm
- D.
Extends humerus and forearm
Correct Answer
B. Flex, medially rotates, and adducts the humerusExplanation
The pectoralis major is a large muscle located in the chest. It is responsible for multiple actions including flexing, medially rotating, and adducting the humerus. Flexion refers to bending the arm at the shoulder joint, medially rotation involves rotating the arm towards the midline of the body, and adduction is the movement of bringing the arm towards the center of the body. Therefore, the correct answer is flex, medially rotates, and adducts the humerus.Rate this question:
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- 44.
What is the pectoralis major innervated by?
- A.
Thoracodorsal
- B.
Lower subscapular
- C.
Axillary
- D.
Medial/lateral pectoral
Correct Answer
D. Medial/lateral pectoralExplanation
The pectoralis major is innervated by the medial and lateral pectoral nerves. These nerves arise from the brachial plexus and provide motor innervation to the pectoralis major muscle. The thoracodorsal nerve innervates the latissimus dorsi muscle, the lower subscapular nerve innervates the subscapularis muscle, and the axillary nerve innervates the deltoid and teres minor muscles. Therefore, the correct answer is medial/lateral pectoral.Rate this question:
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- 45.
Where does the latissumus dorsi originate?
- A.
Iliac crest
- B.
Sternum, cartilage of ribs 2-6
- C.
Spines t7-t12, sacral crest, ilium
- D.
Scapula
Correct Answer
C. Spines t7-t12, sacral crest, iliumExplanation
The latissimus dorsi muscle originates from the spines of the 7th to 12th thoracic vertebrae, the sacral crest, and the ilium.Rate this question:
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- 46.
Where does the latissumus dorsi insert?
- A.
Bicip groove
- B.
Greater tubercle of humerus
- C.
Bicipital aponeurosis
- D.
Greater tubercle & bicip groove
Correct Answer
A. Bicip grooveExplanation
The latissimus dorsi muscle inserts into the bicipital groove. This is the narrow groove located on the anterior side of the humerus bone, specifically in the area where the tendon of the long head of the biceps brachii muscle runs. The latissimus dorsi muscle plays a role in movements of the shoulder joint, such as extension, adduction, and medial rotation.Rate this question:
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- 47.
What is the action of latissimus dorsi?
- A.
Flexes and laterally rotates humerus
- B.
Abducts and laterally rotates humerus
- C.
Extends, adducts and medially rotates humerus
- D.
Adducts and flexes humerus
Correct Answer
C. Extends, adducts and medially rotates humerusExplanation
The latissimus dorsi muscle is responsible for extending, adducting, and medially rotating the humerus. This means that it helps to move the arm backward, bring it closer to the body, and rotate it inward.Rate this question:
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- 48.
What is the latissimus dorsi innervated by?
- A.
Accessory nerve
- B.
Axillary nerve
- C.
Phrenic nerve
- D.
Thoracodorsal nerve
Correct Answer
D. Thoracodorsal nerveExplanation
The latissimus dorsi muscle is innervated by the thoracodorsal nerve. This nerve originates from the brachial plexus and supplies motor innervation to the latissimus dorsi muscle. The thoracodorsal nerve runs along the posterior wall of the axilla and travels through the latissimus dorsi muscle, providing the necessary nerve impulses for muscle contraction and movement.Rate this question:
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- 49.
Where does the deltoid originate?
- A.
Acromial extremity of clavicle, acromion, and spine of scapula
- B.
Supraspinous fossa of scapula
- C.
Inferior lateral border of scapula
- D.
Supracond ridge
Correct Answer
A. Acromial extremity of clavicle, acromion, and spine of scapulaExplanation
The deltoid muscle originates from the acromial extremity of the clavicle, the acromion, and the spine of the scapula.Rate this question:
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- 50.
Where does the deltoid insert?
- A.
Bicip groove
- B.
Deltoid tuberosity of humerus
- C.
Greater tubercle of humerus
- D.
Tuberosity and coronoid process of ulna
Correct Answer
B. Deltoid tuberosity of humerusExplanation
The deltoid muscle is a large, triangular muscle located on the upper arm. It inserts at the deltoid tuberosity of the humerus, which is a bony prominence on the lateral side of the humerus. This tuberosity provides a strong attachment point for the deltoid muscle, allowing it to exert force and participate in movements of the shoulder joint.Rate this question:
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Mar 22, 2023Quiz Edited by
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Mar 18, 2021Quiz Created by
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