Negative feedback model build
Wed, Mar 24, 2027 · Week 10 · Human Anatomy & Physiology (Human Body Systems)
Today's goal: Build and run a physical model of blood-glucose negative feedback involving insulin and glucagon.
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.
Negative feedback loop for blood glucose (set point about 90 mg/dL):
Meal scenario (glucose rises):
- Blood glucose goes up.
- Pancreas releases insulin.
- Insulin moves glucose into cells, so blood glucose falls back toward the set point.
Fasting scenario (glucose falls):
- Blood glucose goes down.
- Pancreas releases glucagon.
- Glucagon releases stored glucose from the liver, so blood glucose rises back toward the set point.
Why this is negative feedback: each response opposes the change that triggered it (high glucose triggers lowering, low glucose triggers raising), pulling the variable back to the set point.
This model shows the level of evidence and organization needed to complete: A feedback-loop diagram showing the insulin response to a meal and the glucagon response to fasting, with labeled negative-feedback arrows showing return toward the set point.
- Date and label the entry.
- Record the procedure, observation, or design decision clearly.
- End with what the evidence means and the next step.
Keep the structure. Replace the question, facts, measurements, and evidence. Then recheck units, vocabulary, and whether the conclusion goes beyond the evidence.
Also due today: Submit your loop diagram on Schoology.
Turn in: Blood-glucose feedback loop diagram
Go to Schoology to turn this in.
Submit one PDF. Put your first and last name in the document header. Name the file: FirstName LastName - Assignment Title - YYYY-MM-DD.pdf.
Open Schoology PDF upload helpIf you cannot get in, see Mr. Mendoza. Do not skip the work.
Claim ceiling: Today's evidence supports a classroom claim about negative feedback model build. It cannot prove causation, diagnose a real patient, or justify action outside this room.
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.
Tap an answer to see the full explanation. Nothing is recorded or graded.
It builds this reusable test skill: Tracing insulin and glucagon in blood-glucose negative feedback.
- Name the concept or data pattern being tested.
- Cross out choices that violate that rule or the evidence.
- Justify the best remaining choice before checking the answer.