A Patient Suffers Nerve Damage to the Median Nerve, Requiring

question 68

Essay

A patient suffers nerve damage to the median nerve, requiring surgery to suture the nerve back together. After surgery, the patient reports that sensation from the lateral and medial sides of the index finger seem to be reversed. How could this happen?

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Definitions:

Rods

Photoreceptor cells in the retina that are highly sensitive to light and enable vision in low light conditions.

Fovea

A small depression in the retina where visual acuity is highest, due to the dense concentration of cone cells.

Periphery

Describes the outer limits or edge of an area or object, often used in reference to vision to describe areas seen outside the central point of focus.

Optic Nerve

A nerve in the brain responsible for sending sight information from the retina to the brain.