Week 6 — Readings & Resources

Human Anatomy and Physiology I Free sample edition

Your primary reading is Chapter 6 (in this module). Everything below is the optional, go-deeper layer — pick what helps, skip the rest.

How to use this page

This page has 10 items (4 readings and 6 videos). Allow 64–77 minutes for everything. Each group points back to the matching chapter section and class-session segment, so use the full menu when you want more, or take the quick path below.

Every video here has captions: turn them on with the CC button in the player. The chapter covers the same ideas in text.

Pick-one quick path (18–20 min total)

① Reading the layers and the cells that build them

Chapter 6, Section “Stack the layers: epidermis, dermis, and hypodermis” · Session 1, Segment 2, “Three layers, top to bottom” · Remember: the epidermis has no blood vessels of its own, and new cells are born at the bottom and end as dead armor at the top.

Health Lesson: Learning About Skin — National Institute of Arthritis and Musculoskeletal and Skin Diseases — a plain-language lesson from a federal health institute, written for younger students, that names the skin's jobs and its three layers; read the sections on what skin is and what it is made of, and skip the sections on skin conditions and keeping skin healthy. It counts the hypodermis as the skin's deepest layer, while this course follows the more cautious convention that it lies below the skin proper. This builds on Week 5's work with the four tissue types. (reading, 8–12 min)
Chapter 11, Skin — Histology Guide — the skin chapter of a free virtual microscope slide box, with a short introduction and scanned slides of thick skin, thin skin, and hair follicles; open one thick-skin slide and one thin-skin slide and look for the extra layer in the thick one. Use it while working through the Week-6 module overview. (reading, 6–10 min)
The Integumentary System, Part 1 - Skin Deep: Crash Course Anatomy & Physiology #6 — CrashCourse — a fast, lively tour of the epidermis, its cells, and its layers; as you watch, list the strata it names from deep to superficial and match keratin and melanin to their jobs. (video, 10 min) (captions: creator)
Integumentary System 101 - Layers of the Skin - FreeSchool 101 — Free School — a calm, beginner-friendly explainer of the skin's layers and what each one does; pause after each layer and say whether it carries blood vessels. (video, 6 min) (captions: creator)

② Hair, nails, glands, and the skin's jobs

Chapter 6, Section “Tour the accessory structures: hair, nails, and glands” · Session 2, Segment 6, “Hair, nails, and glands” · Remember: sebaceous glands make sebum, eccrine glands make cooling sweat, and each structure sits in the dermis.

The Integumentary System, Part 2 - Skin Deeper: Crash Course Anatomy & Physiology #7 — CrashCourse — the follow-up episode on the dermis, the hypodermis, hair, nails, and glands; listen for which gland makes sebum and which makes cooling sweat, and treat any extra detail as optional. (video, 10 min) (captions: creator)
Integumentary System — Bozeman Science — a whiteboard-style overview of the skin's layers, accessory structures, and jobs; check each job it names against this week's five. Stop here before bone; next week takes that up. (video, 8 min) (captions: creator)

③ How the skin sheds and holds heat

Chapter 6, Section “Run the loop on the skin: thermoregulation with named effectors” · Session 2, Segment 8, “The Week 1 loop, run on the skin” · Remember: sweat cools as it evaporates, and the dermal arterioles widen to shed heat and narrow to keep it.

What is the heat index? — National Weather Service — a short weather-service page on how the body cools itself by sweating; read the opening explanation of sweat and evaporation and notice how it ties outdoor conditions to the skin's cooling, then skip the chart and its warning categories. (reading, 3–5 min)
Vasoconstriction & Vasodilation - GCSE Biology — Launchpad Learning — a short animated explainer of how blood vessels near the skin widen to shed heat and narrow to keep it; say which response matches a hot reading and which matches a cold one. (video, 3 min) (captions: creator)
Why do we get goosebumps when we're cold? — Mystery Science — a friendly short lesson on what raises goosebumps in the cold; as you watch, name the tiny muscle on each hair follicle and the layer it sits in. (video, 5 min) (captions: creator)

Optional one-stop reference (free online reference)

Layers of the Skin — SEER Training Modules, National Cancer Institute — the course's free online anatomy reference, open at its page on the layers of the skin; read the sections on the epidermis, the dermis, and the subcutis, note that it calls the stratum spinosum the squamous cell layer, and skip the cell-turnover timings and the mentions of cancer. (reading, 5–8 min)

Heads-up (links rot): these point to outside sites that occasionally move or rename pages. If a link ever fails, tell your instructor and use the reference above in the meantime.

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