Neuro Cranial Nerves & Myotactic Rflx MCQ's

17 Questions | By Chachelly | Last updated: Mar 22, 2022 | Total Attempts: 2432

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Some cranial nerves are involved in the special senses such as seeing, hearing, and taste and others control muscles in the face or regulate glands. Mytotatic reflax is a contraction in response to stretching within a muscle. The neuro cranial nerves & myotactic rflx mcq's below is designed to test how much you know. Give it a try!

Questions and Answers

1.

When testing the sensory innervation of the face, it is important to remember that the skin on the tip of the nose is supplied by which nerve?
- A.
  
  Zygomatic branch of the facial nerve
- B.
  
  Maxillary division of the trigeminal nerve
- C.
  
  Ophthalmic division of the trigeminal nerve
- D.
  
  Buccal branch of the mandibular nerve
- E.
  
  Buccal branch of the facial nerve
2.

A developmental disorder resulting in the failure of the mesencephalon to develop would result in the loss of which of the following structures?
- A.
  
  Facial nuclei
- B.
  
  Spinal trigeminal nuclei
- C.
  
  Oculomotor nuclei
- D.
  
  Hypoglossal nuclei
- E.
  
  Dorsal motor nuclei of X
3.

As a 4th year medical student, you are examining a patient with ptosis (drooping of the eyelid), dilation of the pupil and a downwardly abducted eye. You conclude that the patient has sustained damage to which of the following?
- A.
  
  Abducens nerve
- B.
  
  Oculomotor nerve
- C.
  
  Trochlear nerve
- D.
  
  Principal sensory nucleus of V
- E.
  
  Facial nerve - Dell's palsy
4.

An 18-year-old male presented to the Emergency Room bleeding profusely from a deep cut in the left occipital triangle of his neck and undergoes emergency surgery to repair his internal jugular vein. He survives his injury but he is found on neurological examination to have left-sided weakness in shrugging his shoulder, cannot turn his head to the left against resistance, has a flat left soft palatal arch, and lacks a gag reflex on the left side. What additional clinical sign would be expected in this patient?
- A.
  
  Ptosis on the left side that disappears on upward gaze
- B.
  
  Profound ptosis on the left side
- C.
  
  Dry eye on the left side
- D.
  
  Gustatory sweating over the left parotid gland
- E.
  
  Dry mouth
5.

SVA axons are contained in which of the following cranial nerves?
- A.
  
  CN III, CN VII, CN IX
- B.
  
  CN V, CN VIII, CN IX
- C.
  
  CN VII, CN IX, CN X
- D.
  
  CN II, CN X, CN XI
- E.
  
  CN V, CN X, CN VII
6.

Which of the following cranial nerves does not have a parasympathetic central connection with the brain?
- A.
  
  CN III
- B.
  
  CN V
- C.
  
  CN VII
- D.
  
  CN IX
- E.
  
  CN X
7.

The cell bodies of parasympathetic (GVE) axons are found in which of the following cranial nerves?
- A.
  
  CN I, CN II, CN VIII
- B.
  
  CN II, CN III, CN IV, CN VI
- C.
  
  CN III, CN VII, CN IX, CN X
- D.
  
  CN V, CN VII, CN X
- E.
  
  CN II, CN IX, CN X
8.

Which 2^ndorder neurons are involved with relaying touch & proprioceptive information to the somatosensory cortex from the face?
- A.
  
  Principal (main) sensory nucleus of V
- B.
  
  Nucleus gracilis
- C.
  
  Motor nucleus of V
- D.
  
  Nucleus cuneatus
- E.
  
  Ventral horn neurons
9.

A patient exhibits a loss of pain sensation on the right side of his face. What cranial nerve is affected and a lesion to which of the following tracts would result in the deficit exhibited in this case?
- A.
  
  CN V; Left Trigemino-Thalamic tract
- B.
  
  CN VII; Left spinal tract of V
- C.
  
  CN V; Right Trigemino-Thalamic tract
- D.
  
  CN V, Left spiral tract of V
- E.
  
  CN VII; Right tractus solitarius
10.

A 42-year-old man comes to the emergency department with an abscess of the parotid gland that is subsequently excised and drained. The physician who performs this procedure knows that innervation to the parotid gland is provided by what type of axons and which cranial nerve?
- A.
  
  SVA; CN X
- B.
  
  SVA; CN IX
- C.
  
  GVE; CN X
- D.
  
  GVE: CN IX
- E.
  
  GVE; CN VII
11.

A 32-year-old man developed hoarseness of voice, inability to swallow and restricted movement of the tongue after open heart surgery. Peripheral injury of cranial nerves was suspected, and it was thought that the duration of the surgery together with the endotracheal tube cuff and trans-esophageal echocardiography probe pressure, as well as the head and neck position might have been the causes of this complication. Which cranial nerves were involved?
- A.
  
  IX and X
- B.
  
  IX, X and XII
- C.
  
  VII and XII
- D.
  
  V/3 and IX, X
- E.
  
  V/3 and XII
12.

You are examining a 20-year old male who has suffered a severe concussion after playing in the neighborhood hockey game. You notice that his left eye is depressed and exhibits exotropia and the pupil is dilated. What two nuclei are most likely affected in this young man?
- A.
  
  Trochlear and salivatory nuclei
- B.
  
  Trochlear and Edinger-Westphal nuclei
- C.
  
  Oculomotor and Edinger-Westphal nuclei
- D.
  
  Abducens and Edinger-Westphal nuclei
- E.
  
  Oculomotor and salivatory nuclei
13.

You are on your emergency medicine rotation and are assisting in the examination of a patient who has been in a vehicular accident. You noticed when testing the cranial nerves, the patient's tongue deviates towards the left upon protrusion. Which cranial nerve is damaged in this case?
- A.
  
  The facial nerve on the left
- B.
  
  The facial nerve on the right
- C.
  
  The mandibular division of trigeminal (V3) on the right
- D.
  
  The hypoglossal nerve on the right
- E.
  
  The hypoglossal nerve on the left
14.

Which of the following nuclei is associated with both CN IX and CN X and is important in providing innervation to the voluntary muscles of the larynx, pharynx and palate?
- A.
  
  Rostral nucleus solitaries
- B.
  
  Edinger-Westphal nucleus
- C.
  
  Dorsal motor nucleus of X
- D.
  
  Nucleus ambiguous
- E.
  
  Facial nuclei
15.

A 22 year old truck driver suffers a crush injury to the 'left arm after a road accident. The mixed spinal nerves leaving the spinal cord at levels C5 and C6 are affected, with impingement and major inflammation. The damage is limited to the peripheral nervous portions of these nerves only. Which below is the most likely finding in this patient with regard to his Deep Tendon (Myotatic) Reflexes?
- A.
  
  Areflexia (no reflex) - Left Biceps Brachii muscle
- B.
  
  Hypo-reflexia (diminished reflex) - Right Biceps Brachii muscle
- C.
  
  Hyper-reflexia (overactive reflex) - Left Biceps Brachii muscle
- D.
  
  Hyper-reflexia - Right Biceps Brachii muscle
- E.
  
  Hypo-reflexia - Left Biceps Brachii muscle
16.

A lesion at the level of the cerebral peduncle would affect descending fibers of the corticospinal tract. Disruption of these axons would result in which of the following?
- A.
  
  Flaccid paralysis
- B.
  
  Areflexia
- C.
  
  Hypotonicity
- D.
  
  Positive Babinski sign
- E.
  
  Absent Babinski sign
17.

A 79-year old man is experiencing peripheral nerve damage of his lower right limb. Which of the following is characteristic of lower motor neuron damage?
- A.
  
  Hyperreflexia
- B.
  
  Increased tone
- C.
  
  Hyporeflexia
- D.
  
  Spastic paralysis
- E.
  
  Increased muscle mass