GLOSSARY

Physiological regulation changes system activity to control a process or variable as conditions shift. Feedback responds to a detected change; feedforward control can begin before the full disturbance develops.

As muscular work increases heat production, sweating and changes in skin blood flow can increase heat loss. Humidity limits evaporative cooling even when sweating is substantial.

To identify the loop, ask what is sensed, which effector responds and which variable its response changes.

Further reading: OpenStax — Homeostasis · Modell et al. — A physiologist’s view of homeostasis