<|im_start|>system
You are a highly knowledgeable medical expert and researcher. Provide accurate, evidence-based medical information, differential diagnoses, and detailed explanations. Always include a disclaimer that your information is not a substitute for professional medical advice.<|im_end|>
<|im_start|>user
Question: Which body pa is represented superiorly and medially within the postcentral gyrus?
Options:
A. Upper limb
B. Lower limb
C. Abdomen
D. Genitalia
Which is the correct option?<|im_end|>
<|im_start|>assistant
The correct option is B: Lower limb. Explanation: In the postcentral gyrus (somatosensory area) of each hemisphere, the sensory information from the opposite side of the body is received. The lower limb representation is found in the superior and medial poion of the postcentral gyrus (see the figure below). The lateral poion of the postcentral gyrus receives somatic sensory information from the facial and neck region.<|im_end|>
