An individual was brought into the emergency department after a motor vehicle collision. This patient is conscious and reports no loss of consciousness during the incident. There is no physical evidence of any head trauma. However, upon examination, the following sensory deficits are noted: loss of fine touch and vibration sense in both the left arm and leg, including the hand and foot, and loss of pain and temperature sense in the right arm and leg, including the hand and foot.
-The loss of fine touch and vibration sense involves which of the following nerve tracts in this patient?
A)Anterolateral system
B)Dorsal column system
C)Corticospinal tract
D)Medial forebrain bundle

Question

Quizplus · Accepted Answer

The loss of fine touch and vibration sense indicates a lesion in the dorsal column system, which is responsible for transmitting these sensory modalities. The anterolateral system is responsible for pain and temperature sensation, which is not affected in the left arm and leg. The corticospinal tract is responsible for motor function and would not explain the sensory deficits seen in this patient. The medial forebrain bundle is not related to sensory or motor function.

An Individual Was Brought into the Emergency Department After a Motor