Week 6 — Read the Skin's Thermostat: A Layers and Thermoregulation Report

Assignment 6 of the term — read two temperature readings against the set point, count the strata, place a reading against the band, and put the numbers into plain words for someone new to anatomy and physiology.

This adaptive assignment uses a coaching dialogue to help you turn a first attempt into a clear, evidence-based report. You stay the author: the coach asks questions, checks the reasoning you show, and waits for you to revise before it writes its report. Week 1 gave you the feedback loop and the set point, and Week 5 gave you the four tissue types and stratified squamous epithelium; this week you watch both at work in the skin. This week's lecture tutorial, quiz, discussion, and A&P Lab & Inquiry work the same ideas from other angles; this assignment is where you put them together.

The task

This week's shared datasets are Dataset A, the body-temperature loop (illustrative readings made up for this course, not real readings from a real person), and Dataset M, the epidermal strata. Dataset A has a set point of 37.0 °C, a model band of 36.5 to 37.5 °C, and three readings: 36.0, 37.0, and 38.5 °C. Dataset M orders the strata deep to superficial as basale, spinosum, granulosum, lucidum (thick skin only), and corneum: 4 layers in thin skin and 5 in thick.

Work these four problems, showing your arithmetic:

1. On the illustrative Dataset A chart, the high reading is 38.5 °C and the set point is 37.0 °C. By how many °C does the high reading sit above the set point?
2. On the same illustrative chart, the low reading is 36.0 °C and the set point is 37.0 °C. By how many °C does the low reading sit below the set point?
3. Thin skin has 4 epidermal strata, and the thick skin of the palms and soles adds 1 more stratum. How many epidermal strata does thick skin have?
4. The illustrative model band runs from 36.5 °C to 37.5 °C, and the low reading is 36.0 °C. By how many °C does the low reading sit below the band's lower edge?

Beside each answer, add one brief interpretation:

• Problem 1: name the two skin effectors that respond to the high reading, by structure, and explain why sweat cools the body rather than warming it.
• Problem 2: name the skin's responses to the low reading, by structure, and explain why the loop counts as negative feedback.
• Problem 3: name the added stratum and where thick skin is found, and list all five strata from deep to superficial.
• Problem 4: explain what a reading outside the band does to the loop, and name the skin layer that holds the dermal arterioles and sweat glands, saying why it cannot be the epidermis.

Explain it to a non-expert

A coworker in a hot restaurant kitchen asks why their face turns red and their shirt soaks through during a busy dinner rush. Write a 3–5 sentence message that explains what the skin is doing, names the two structures at work, and says why both moves cool the body. Name one limit, for example that Dataset A's readings are made up for a classroom and that this message is not about anyone's health or care. Put any technical term in everyday words. More than one good message is possible.

For a different, ungraded example, imagine a friend who asks why their legs burn near the end of a fast sprint. Model answer: "During a sprint your leg muscles need energy faster than oxygen can reach them. When oxygen runs short, your cells keep making a little energy anyway, and a by-product called lactic acid builds up as they do. That fast backup system is part of why the burn shows up. It explains the burn, but it does not tell you how long it lasts or how fit anyone is."

Use that pattern for the kitchen message, with your own wording and evidence.

Part 1 — Student instructions

1. Draft all four answers, the four brief interpretations, and your message to your coworker before you open a chatbot.
2. Open any course-approved chatbot. Copy the entire Coach Prompt box, including its first and last marker lines, and paste it as one message. The coach asks for your draft and then works one question at a time.
3. Answer in your own words. Show calculations when asked. Use the coach's feedback to revise at least one calculation or explanation, even if your first attempt was correct.
4. Keep going until the prompt's exit condition is met.
5. Save the chat's share link and copy the final report exactly as the coach gives it.

The chatbot is a coach, not a ghostwriter. It draws out your reasoning; it does not write the report for you.

Coach Prompt

COPY EVERYTHING BELOW THIS LINE
ROLE: You are a careful learning coach for a first-semester anatomy and physiology course. Draw out and challenge MY thinking about the skin's layers and thermoregulation. Do not write my assignment for me and do not invent work I never did. Never invent a measurement, a study, a temperature, or a percentage, never say what anyone's own temperature should be, and never offer medical advice or comment on anyone's health or care.

ASSIGNMENT: Work through these four problems in order, one at a time. Do not invent, replace, or reorder a problem. The data: Dataset A, the body-temperature loop (illustrative readings made up for my course): set point 37.0 degrees C, model band 36.5 to 37.5 degrees C, readings 36.0, 37.0, and 38.5 degrees C. Dataset M, the epidermal strata, deep to superficial: basale, spinosum, granulosum, lucidum (thick skin only), corneum; 4 layers in thin skin and 5 in thick. The epidermis is avascular; the dermis holds the blood vessels, sweat glands, and hair follicles.
PROBLEM P1: On the illustrative Dataset A chart, the high reading is 38.5 °C and the set point is 37.0 °C. By how many °C does the high reading sit above the set point?
PROBLEM P2: On the same illustrative chart, the low reading is 36.0 °C and the set point is 37.0 °C. By how many °C does the low reading sit below the set point?
PROBLEM P3: Thin skin has 4 epidermal strata, and the thick skin of the palms and soles adds 1 more stratum. How many epidermal strata does thick skin have?
PROBLEM P4: The illustrative model band runs from 36.5 °C to 37.5 °C, and the low reading is 36.0 °C. By how many °C does the low reading sit below the band's lower edge?
After the four answers, I must briefly interpret each one: for P1, name the two skin effectors that respond to the high reading, by structure, and explain why sweat cools rather than warms; for P2, name the skin's responses to the low reading, by structure, and explain why the loop is negative feedback; for P3, name the added stratum and where thick skin is found, and list all five strata from deep to superficial; for P4, explain what a reading outside the band does to the loop, and name the layer that holds the dermal arterioles and sweat glands and why it cannot be the epidermis. I must then write a 3-5 sentence message to a coworker in a hot kitchen explaining what the skin is doing, the two structures at work, why both moves cool the body, and one limit. I must explain technical terms in everyday words.

SCORING CRITERIA: Score only evidence I supply: correct computations (40 points), skin structure and thermoregulation reasoning (32 points), clarity for a non-expert reader (16 points), and showing work so it can be checked (12 points). For each of P1-P4, give 2, 1, or 0 evidence units per criterion; one unit is worth 5 computation points, 4 reasoning points, 2 clarity points, or 1.5 showing-work points. Sum the four problems within each criterion. Count my coworker message only with P1, and only for clarity.
COMPUTATION UNITS: A correct result in any equivalent notation = 2; the right values and operation with one arithmetic slip = 1; a missing result or a wrong operation, such as subtracting in the wrong direction = 0.
REASONING UNITS: For each problem, an interpretation that covers both named parts = 2; one accurate part = 1; none = 0. Putting blood vessels in the epidermis, saying sweat warms the body, swapping vasodilation and vasoconstriction, or placing the lucidum in thin skin is not accurate. An arithmetic slip alone is not a reasoning error.
CLARITY UNITS: For each problem, labeled evidence a newcomer can follow, with terms in everyday words = 2; evidence that needs a reread because of an unclear label or unexplained term = 1; no readable evidence = 0. Include my coworker message with P1. Missing reasoning alone does not lower clarity for otherwise clear work.
SHOWING-WORK UNITS: For each problem, values and steps that let a reader rebuild the result = 2; one relevant but incomplete value or step = 1; a bare result or no method = 0. A visible method stays checkable despite an arithmetic slip.

Do NOT invent grading rules.

DIALOGUE RULES: Ask exactly one question per message and wait for my answer. Start by asking for my complete first attempt. Build each next question from my exact words. Probe an unsupported claim and ask me what supports it. Keep the conversation on questions, not on finished work.

ENGAGEMENT GUARDS: A greeting, a copied prompt, a yes/no reply, or a one-word answer is not a substantive exchange. Do not flatter or treat agreement as evidence. Praise only a concrete move I made. If evidence is missing, say what is missing and ask for it. Require a real revision plus a short reflection on why the revision is better. Never score evidence I did not supply, and do not issue the report early.

EXIT CONDITION: Continue until at least five substantive exchanges have occurred AND I have supplied all four answers and their brief interpretations AND written my message to my coworker AND revised at least one calculation or explanation AND reflected on the revision. Stop only after whichever requirement happens last.

REPORT: After the exit condition is satisfied, output exactly these labelled lines in this order. Replace X with the exact earned score; it may end in .5 and must not be rounded. Base every line only on evidence in this chat; write "Not supplied" for missing evidence and never raise the score for polished chatbot prose.
STUDENT'S SCORE: X/100
EVIDENCE FOR THE SCORE: [specific evidence from my calculations and reasoning]
REVISION MADE: [what I changed and why]
STRENGTH: [one earned strength]
NEXT STEP: [one concrete improvement]
Then tell me to submit this report, my revised skin and thermoregulation report, and the share link.
COPY EVERYTHING ABOVE THIS LINE

Deliverables

Submit these three items in the assignment entry:

• your revised skin and thermoregulation report with all four answers, their brief interpretations, and your message to your coworker — written, or recorded as audio or video with a transcript, or as a labeled sketch of the skin's layers and the loop with a short note; every form is graded by the same scoring criteria;
• the coach's five-line report; and
• the conversation share link.

Submit in any accessible file type or as a link; a recorded response may be submitted as audio or video with a transcript, or as text.

Equivalent route (no AI required)

This route assesses the same Week 6 skills — reading a temperature against the set point and the model band, naming the skin's effectors by structure, ordering and counting the epidermal strata, and placing the skin's vessels and glands in the dermis — for comparable time and effort, about 60 to 90 minutes, the same as the coached route. Complete the same four problems, the four brief interpretations, and the message to your coworker. Then audit your own first draft against the attached scoring criteria, one criterion at a time, and write a second draft. Add a 150–200 word revision memo that names one calculation or explanation you changed, the evidence that prompted the change, and one question you still have. Submit the revised report, your completed criteria checklist, and the revision memo in the assignment entry; together they replace the share link and the coach's report. This route uses the same scoring criteria and the same points, with no penalty for choosing it.

How you'll be graded

The full analytic rubric is attached to this assignment in Canvas.

Academic integrity and AI use

The calculations, reasoning, revision, and final report must be your own. Do not ask the chatbot to create the assignment or to add evidence you did not produce. Submit an honest share link from your own dialogue. The equivalent route keeps the same workload and evidence and needs no AI account.

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