Which of the following parts of the body would have the largest area represented on the primary somatosensory area?
A)foot
B)torso
C)arm
D)hand

Question

Quizplus · Accepted Answer

The primary somatosensory cortex is organized according to a map of the body, known as the somatotopic map or homunculus. In this map, the amount of cortical area devoted to a body part is not proportional to the part's size but rather to the density of sensory receptors in that part of the body. The hand has a high concentration of sensory receptors, allowing for detailed sensation and fine motor control, thus it occupies a larger area on the somatosensory cortex compared to the foot, torso, or arm.

Which of the Following Parts of the Body Would Have