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Set 7 Electrical Signaling By Neurons

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Question 1

(Multiple Choice)

Free
A fracture in the cribriform plate can cause tearing of the olfactory fibers as they ascend to the olfactory bulb, thereby resulting in

A) Ipsilateral anosmia
B) Ipsilateral aphasia
C) Contralateral anosmia
D) Contralateral aphasia

Answer

Question 2

(Multiple Choice)

Free
A 34-year-old cellist visits the otolaryngology clinic with the complaint of dizziness, decreased ability to hear in her right ear, and the inability to raise the right side of her mouth when smiling. Caloric irrigation of the right ear produces no response. Which of the following would most likely explain the deficits seen in this patient?

A) Large subdural hematoma over the right temporal lobe
B) Squamous cell carcinoma in the right middle ear
C) Acoustic neuroma in the right internal acoustic meatus
D) Large neuroma over the right cerebellar cortex

Answer

Question 3

(Multiple Choice)

Free
A 52-year-old construction worker is brought to the emergency department with a 3-inch nail lodged in the posterior aspect of his skull after a coworker's nail gun misfired. Subsequent to awaking from surgery to remove the nail, the man indicates that he is unable to see objects in the left half of his visual field. Which of the following most likely represents the location damaged by the nail?

A) Optic chiasm
B) Left visual cortex
C) Right visual cortex
D) Postcentral gyrus
E) Angular gyrus

Answer