Anatomy and Physiology 2e by J. Gordon Betts and others / 1.5 Homeostasis

Online text: openstax.org/books/anatomy-and-physiology-2e/pages/1-5-homeostasis

Cited passages: §1.5, Figure 1.10 and thermoregulatory examples following it; §1.5, Negative Feedback, Figure 1.10: sensor, control center and effector; §1.5, opening paragraphs and Negative Feedback: normal ranges and compensatory responses.