David, an Aspiring Baseball Player, Was Struck on the Left

question 7

Essay

David, an aspiring baseball player, was struck on the left side of his face with a fastball pitch. He was not wearing a safety helmet. His zygomatic arch was crushed, as well as parts of the temporal bone. Following the accident and reconstructive surgery, he noted that his left lower eyelid was still drooping and the corner of his mouth sagged. What nerve damage did he sustain?

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Definitions:

Point Bar

a depositional feature made of alluvium that accumulates on the inside bend of streams and rivers below the slip-off slope.

Cutbank

The steep bank typically found on the outside bend of a river or stream, formed by the erosion process of flowing water.

Sinuosity

A measure of how much a river meanders or curves compared to the straight path down its valley.

Esker

A long, winding ridge of stratified sand and gravel, typically in a serpentine shape, formed by retreating glaciers or ice sheets.