Cranial Nerves in Neuroscience Section 2

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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?

Tinnitus Signup and view all the answers

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

To ensure the patient's sense of smell is not overwhelmed Signup and view all the answers

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

Parosmia Signup and view all the answers

What is the function of the optic nerve?

Vision Signup and view all the answers

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

Dilated pupil Signup and view all the answers

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

Trigeminal nerve Signup and view all the answers

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

Vertical diplopia Signup and view all the answers

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

To assess visual field defects Signup and view all the answers

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

Horizontal diplopia Signup and view all the answers

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

The type of object used for stimulation Signup and view all the answers

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

To resist the closure of the mouth Signup and view all the answers

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

It is the afferent limb of the corneal reflex Signup and view all the answers

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

It is pronounced Signup and view all the answers

What type of nerve is the facial nerve?

Mixed nerve Signup and view all the answers

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

To resist the closure of the mouth Signup and view all the answers

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

Accessory nerve Signup and view all the answers

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

Inhibiting the heart rate Signup and view all the answers

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

Diminished gag reflex and trouble swallowing Signup and view all the answers

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

Hypoglossal nerve Signup and view all the answers

A lesion on which nerve can cause hoarseness of voice?

Vagus nerve Signup and view all the answers

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

Supplying the sternomastoid and trapezius muscles Signup and view all the answers

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

Stylopharyngeus 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?

Tinnitus Signup and view all the answers

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

Facial nerve 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?

Inability to close the eye on the affected side 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?

Glossopharyngeal nerve Signup and view all the answers

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

Caloric test Signup and view all the answers