NB [012] Pharynx

Question 1

Answer 1

Question 2

Answer 2

Question 3

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Question 4

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Question 5

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Question 6

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Question 7

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Question 8

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Question 9

Answer 9

Question 10

R

Answer 10

Question 11

Answer 11

Question 12

The arterial circle (of Willis) contributes greatly to cerebral arterial circulation when one primary artery becomes occluded by atherosclerotic disease. Which of the following vessels does not contribute to the circle?

A. Anterior communicating artery

B. Posterior communicating artery

C. Middle cerebral artery

D. Internal carotid artery

E. Posterior cerebral artery

Answer 12

C. Middle cerebral artery

Question 13

55-year-old woman is diagnosed with a tumor at the base of the skull, resulting in a decrease in tear production. Which of the following nerves is most likely injured?

A. Chorda tympani

B. Deep petrosal

C. Greater petrosal

D. Lesser petrosal

E. Nasociliary

Answer 13

C. Greater petrosal

Question 14

34-year-old male complains of hyperacusis (sensitivity to loud sounds). Injury to which of the following cranial nerves is responsible?

A. Hypoglossal

B. Facial

C. Accessory

D. Vagus

E. Glossopharyngeal

Answer 14

B. Facial

Question 15

A 36-year-old woman is admitted to the hospital with severe head injuries after a car crash. During neurologic examination her uvula is deviated to the right. Which nerve is most likely affected to result in this deviation?

A. Left vagus

B. Right vagus

C. Right hypoglossal

D. Left glossopharyngeal

E. Right glossopharyngeal

Answer 15

A. Left vagus

Question 16

A 70-year-old man is admitted to the hospital with chronic headache and enlarged lymph nodes. A CT scan shows a tumor at the jugular foramen. Which of the following would be the most likely neurologic deficit?

A. Loss of tongue movements

B. Loss of facial expression

C. Loss of sensation from the face and the scalp

D. Loss of hearing

E. Loss of gag reflex

Answer 16

E. Loss of gag reflex

Question 17

70-year-old man is admitted to the hospital with severe headaches. During physical examination he has difficulty coughing and swallowing. A CT scan shows a tumor affecting a cranial nerve. Which nerve is most likely affected?

A. Mandibular

B. Maxillary

C. Glossopharyngeal

D. Vagus

E. Hypoglossal

Answer 17

D. Vagus

Question 18

33-year-old woman is unconscious when she is admitted to the hospital after she fell, hitting her head. The physician in the emergency department performs a pupillary light reflex test. The integrity of which of the following nerves is being checked?

A. Optic and facial

B. Optic and oculomotor

C. Maxillary and facial

D. Ophthalmic and oculomotor

E. Ophthalmic and facial

Answer 18

B. Optic and oculomotor

Question 19

A 48-year-old man presents with a constricted right pupil that does not-react to light. His left pupil and vision in both eyes are normal. These findings are most likely due to a lesion involving which of the following right-sided structures?

A. Oculomotor nerve B. Superior cervical ganglion

C. Nervus intermedius

D. Edinger-Westphal nucleus

E. Trigeminal (semilunar, Gasserian) ganglion

Answer 19

B. Superior cervical ganglion