Anatomy vs physiology, homeostasis
Wed, Jan 27, 2027 · Week 2 · Human Anatomy & Physiology (Human Body Systems)
Today's goal: Distinguish anatomy from physiology and explain homeostasis using a feedback example.
What a finished product looks like
This is a model of the work you should turn in today. Use it to check your own: match the structure and the level of detail, do not copy it. Your data and wording should be your own.
Title (dated): Negative-Feedback Loop, Cooling Down When Too Hot
Labeled loop (in order):
- Stimulus: body temperature rises above the set point of about 37 degrees Celsius (for example, after exercise).
- Sensor (receptor): temperature receptors in the skin and the hypothalamus detect the rise.
- Control center: the hypothalamus compares the reading to the set point and signals a response.
- Effector: sweat glands and skin blood vessels.
- Response: sweating increases and skin vessels widen (vasodilation), releasing heat. Temperature drops back toward the set point, which shuts the loop off.
One-sentence summary: This is negative feedback because the response (cooling) opposes the original change (heating), pulling the body back to its set point.
Note on anatomy vs physiology: naming the sweat gland is anatomy (structure); explaining that sweating releases heat is physiology (function).
Also due today: Submit a photo of your dated notebook page showing the completed loop diagram.
WebXam problem for today's skill
One exam-style question that uses exactly what you practiced today. Try it before you reveal the answer, then read why each choice is right or wrong.
| Component | Role in the loop |
|---|---|
| Stimulus | Body temperature rises above set point |
| Sensor | Detects the change |
| Control center | Compares to set point and signals |
| Effector | Carries out the corrective response |
Tap an answer to see the full explanation. Nothing is recorded or graded.