Question

1. the body is able to detect pressure on its surface by which direct means?

changing of voltage in interneurons
signaling by sensory neurons
changing in volume of fat and muscle cells
releasing of hormones in skin

Explanation:

To determine how the body detects pressure on its surface, we analyze each option:

• "changing of voltage in interneurons": Interneurons process signals, not directly detect pressure.
• "signaling by sensory neurons": Sensory neurons (like mechanoreceptors) detect stimuli like pressure and send signals to the CNS, which is the direct means of pressure detection.
• "changing in volume of fat and muscle cells": Fat/muscle volume changes don’t relate to pressure detection.
• "releasing of hormones in skin": Hormone release in the skin is not for pressure detection.

Answer:

B. signaling by sensory neurons