Regarding sensitivity, more of the primary somatosensory cortex is devoted to the
A)lips.
B)shoulder.
C)feet.
D)legs.

Question

Quizplus · Accepted Answer

The primary somatosensory cortex has a somatotopic organization, meaning different body parts are represented in different areas. The amount of cortex devoted to a body part is proportional to its sensitivity and the density of sensory receptors. The lips, having a high concentration of sensory receptors, are represented by a larger area of the somatosensory cortex compared to the shoulder, feet, or legs, making them more sensitive.

Regarding Sensitivity, More of the Primary Somatosensory Cortex Is Devoted