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</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</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</p> Signup and view all the answers

    What is the function of the optic nerve?

    <p>Vision</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</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</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</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</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</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</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</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</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</p> Signup and view all the answers

    What type of nerve is the facial nerve?

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

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

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

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

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

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

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

    A lesion on which nerve can cause hoarseness of voice?

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

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