John Hay
John Hay Biomedical
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Here's an example of what's due today

Glucose data CER analysis

Mon, Apr 5, 2027 · Week 12 · Human Anatomy & Physiology (Human Body Systems)

Today's goal: Analyze blood-glucose data and write a CER explaining how feedback maintains homeostasis.

Learn first

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.

Worked CER on a parallel case (body-temperature regulation)
Completes: A Claim-Evidence-Reasoning paragraph analyzing a body-temperature graph: a claim about how homeostasis is restored, two specific data-point evidence entries, and reasoning that names negative feedback.

Claim: After a hard run, the body restored normal core temperature through negative feedback.\n\nEvidence: At 0 minutes (just before running) core temperature was about 37.0 degrees Celsius. At 20 minutes it peaked at about 38.6 degrees Celsius, and by 60 minutes it had returned to about 37.1 degrees Celsius.\n\nReasoning: The rise at 20 minutes was detected by the hypothalamus, which triggered sweating and widening of skin blood vessels to release heat. Because the response (cooling the body) opposed the change that triggered it (the rise in temperature), this is negative feedback, and that is why the value came back down near the starting set point of about 37.0 degrees Celsius by 60 minutes.

Blood-glucose curve rising from 90 mg/dL at 0 minutes to a 140 mg/dL peak at 30 minutes, then returning to about 95 mg/dL by 120 minutes.
Why this matters

This model shows the level of evidence and organization needed to complete: A Claim-Evidence-Reasoning paragraph analyzing a body-temperature graph: a claim about how homeostasis is restored, two specific data-point evidence entries, and reasoning that names negative feedback.

Build yours step by step
  1. Write one defensible claim.
  2. Choose specific evidence that supports the claim.
  3. Explain the scientific rule that connects the evidence to the claim.
Change it for a new task

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 CER on Schoology.

Turn in: Worked CER on a parallel case (body-temperature regulation)

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 help

If you cannot get in, see Mr. Mendoza. Do not skip the work.

Claim ceiling: Today's evidence supports a classroom claim about glucose data CER analysis. It cannot prove causation, diagnose a real patient, or justify action outside this room.

Check yourself

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.

WebXam-style domain: Human Body Form, Function, and PathophysiologySelf-check skill: Reading a blood-glucose graph to identify negative feedback and where it fails
On a blood-glucose graph, a healthy person's level peaks after a meal and returns to baseline within two hours. A person with untreated Type 1 diabetes stays high and does not return. What does the failure to return indicate?

Tap an answer to see the full explanation. Nothing is recorded or graded.

Why this practice matters

It builds this reusable test skill: Reading a blood-glucose graph to identify negative feedback and where it fails.

Use it on a new WebXam question
  1. Name the concept or data pattern being tested.
  2. Cross out choices that violate that rule or the evidence.
  3. Justify the best remaining choice before checking the answer.
Back to today's lesson