releasing of hormones in skin changing in volume of fat and muscle cells signaling by sensory neurons changing of voltage in interneurons
I gave my students this multiple choice question: The body is able to detect pressure on its surface by which direct means?

Only one answer is correct among these 4 choices:
- releasing of hormones in skin
- changing in volume of fat and muscle cells
- signaling by sensory neurons
- changing of voltage in interneurons

Could you tell me which one is correct?

signaling by sensory neurons