Question

juan loves cross - country. on a particularly hot day, he goes for a run. as he is exercising, he notices he has begun to sweat, and his breathing has gotten heavier and more frequent. after he is done working out his breathing returns to normal and he stops sweating. inside juans body, his nerve cells had detected the rise in body temperature taking place. the message was relayed to a part of the brain that then sent out a signal to the rest of the body. after receiving the signal the lungs began to take deeper and slower breaths, the heart started to beat slower. which part of juan acted as the sensor/receptor?
o juans lungs
o juans heart
o juans nerve cells
o part of juans brain

Explanation:

Nerve cells are sensory receptors that detect changes in the body such as temperature. They send messages to the brain which then coordinates responses. The heart, lungs, and parts of the brain are not the initial sensors for detecting body - temperature rise.

Answer:

Juan's nerve cells