This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Sensory System, Subject name: Physiology
Which body pa is represented superiorly and medially within the postcentral gyrus? 
Select and explain. 
A. Upper limb, B. Lower limb, C. Abdomen, D. Genitalia
B: Lower limb
Answer: 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.