Neurology Quiz #48 Papillary Muscle Control and Ocular Motility

1. A 55-year-old man presents to the clinic with complaints of double vision and difficulty reading for the past two months. Physical examination reveals that the patient is unable to move his right eye medially. The muscle most likely affected is innervated by which of the following cranial nerves? 

Question 1 of 5

2. During a routine eye examination, a 30-year-old woman is found to have an upward deviation of her left eye when attempting to look straight ahead. Further examination reveals that she is unable to depress her left eye when it is in an adducted position. Which of the following muscles is most likely impaired? 

Question 2 of 5

3. A 45-year-old woman comes to the physician with complaints of double vision and ptosis of the right eyelid. On examination, her right pupil is dilated and does not constrict in response to light. Which of the following nerves is most likely affected? 

Question 3 of 5

4. A 22-year-old man presents to the emergency department after a bar fight with a deep laceration to his face. On examination, he is unable to clench his jaw tightly and has decreased sensation over his chin. Which of the following muscles is directly involved in the action that he is unable to perform? 

Question 4 of 5

5. A 60-year-old man with a history of hypertension and diabetes mellitus presents with sudden onset of double vision. On examination, he is unable to abduct his left eye. The remainder of his cranial nerve examination is normal. Which of the following is the most likely location of the lesion? 

Question 5 of 5


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