Cranial Nerves in Neuroscience Section 2
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Questions and Answers

What is the primary function of the Olfactory nerve (CN I)?

  • Control of eye movement
  • Facial expressions and taste
  • Transmission of visual information
  • Sense of smell (correct)

A patient is unable to detect smells. Which of the following terms best describes this condition?

  • Phantosmia
  • Parosmia
  • Anosmia (correct)
  • Hyperosmia

During an examination of the Olfactory nerve, the patient is asked to identify the aroma of a substance. What is the reason for blocking one nostril?

  • To test the sense of smell on both sides simultaneously
  • To test the patient's ability to identify smells with their eyes open
  • To compare the sense of smell on both sides separately (correct)
  • To stimulate the trigeminal nerve

Which of the following is NOT a possible effect of a lesion on the Olfactory nerve?

<p>Tinnitus (D)</p> Signup and view all the answers

What is the purpose of avoiding strong or noxious smells during the examination of the Olfactory nerve?

<p>To ensure the patient's sense of smell is not overwhelmed (C)</p> Signup and view all the answers

What is the term for distorted odor perception due to a lesion on the Olfactory nerve?

<p>Parosmia (C)</p> Signup and view all the answers

What is the function of the optic nerve?

<p>Vision (C)</p> Signup and view all the answers

A patient with a lesion in the oculomotor nerve may exhibit which of the following symptoms?

<p>Dilated pupil (C)</p> Signup and view all the answers

Which nerve is responsible for transmitting sensory information from the face, including the sensation of touch?

<p>Trigeminal nerve (B)</p> Signup and view all the answers

A patient with a lesion in the trochlear nerve may exhibit which of the following symptoms?

<p>Vertical diplopia (D)</p> Signup and view all the answers

What is the purpose of the confrontation test in the visual field test?

<p>To assess visual field defects (A)</p> Signup and view all the answers

A patient with a lesion in the abducens nerve may exhibit which of the following symptoms?

<p>Horizontal diplopia (B)</p> Signup and view all the answers

What is the primary difference between the procedure for testing nociception and the procedure described earlier?

<p>The type of object used for stimulation (C)</p> Signup and view all the answers

What is the purpose of placing the examining hand beneath the chin during the muscle strength assessment?

<p>To resist the closure of the mouth (D)</p> Signup and view all the answers

What is the role of the ophthalmic nerve in the corneal reflex?

<p>It is the afferent limb of the corneal reflex (C)</p> Signup and view all the answers

What is the typical response of the jaw jerk reflex in individuals with upper motor neuron lesions?

<p>It is pronounced (D)</p> Signup and view all the answers

What type of nerve is the facial nerve?

<p>Mixed nerve (D)</p> Signup and view all the answers

What is the function of the masseter muscle during the trigeminal nerve examination?

<p>To resist the closure of the mouth (D)</p> Signup and view all the answers

Which cranial nerve is responsible for motor innervations of the soft palate and pharynx?

<p>Accessory nerve (B)</p> Signup and view all the answers

What is the function of the autonomic fibers in the vagus nerve?

<p>Inhibiting the heart rate (C)</p> Signup and view all the answers

A patient with a lesion on the vagus nerve may experience which of the following symptoms?

<p>Diminished gag reflex and trouble swallowing (C)</p> Signup and view all the answers

Which nerve supplies the intrinsic and extrinsic muscles of the tongue?

<p>Hypoglossal nerve (A)</p> Signup and view all the answers

A lesion on which nerve can cause hoarseness of voice?

<p>Vagus nerve (B)</p> Signup and view all the answers

What is the function of the spinal part of the accessory nerve?

<p>Supplying the sternomastoid and trapezius muscles (C)</p> Signup and view all the answers

Which muscle is responsible for movements involved in speech and swallowing and is innervated by the glossopharyngeal nerve?

<p>Stylopharyngeus (C)</p> Signup and view all the answers

A patient with a lesion of the cochlear part of the vestibulocochlear nerve is likely to experience which of the following symptoms?

<p>Tinnitus (A)</p> Signup and view all the answers

Which of the following cranial nerves is responsible for supplying the submandibular gland, sublingual gland, and lacrimal gland?

<p>Facial nerve (B)</p> Signup and view all the answers

A patient with a lower motor neuron lesion of the facial nerve is likely to exhibit which of the following characteristics?

<p>Inability to close the eye on the affected side (D)</p> Signup and view all the answers

Which of the following sensory fibers carries impulses for general sensation from the posterior 1/3 of the tongue?

<p>Glossopharyngeal nerve (D)</p> Signup and view all the answers

Which of the following tests is used to assess the vestibular part of the vestibulocochlear nerve?

<p>Caloric test (C)</p> Signup and view all the answers

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