Unit 08 · The Immune & Integumentary Systems
The year closes with the body’s outer wall and its defense force. This unit covers the skin — its three layers, its jobs from barrier to sensation, how it holds body temperature steady, and how a wound heals — alongside the immune system: the fast, general innate response, the slower, specific adaptive response, the white blood cells and antibodies that carry it out, and how a vaccine trains it. Mastery means you can identify integumentary structures on a model or slide and reason through an immune-response case, exposure to recovery.
| Criterion | Not yet | Approaching | Mastered |
|---|---|---|---|
| The layers of the skin | Cannot name the three skin layers or place them in order. | Names epidermis, dermis, and hypodermis but cannot say what each layer is built from or does. | Identifies the epidermis, dermis, and hypodermis on a model or slide and states what each layer is made of and does. |
| Skin functions & thermoregulation | Cannot name what the skin does beyond “covering the body.” | Names a function or two but cannot explain how the skin regulates body temperature. | Explains the skin’s major jobs — barrier, sensation, temperature control — and how sweating and changes in blood flow hold body temperature steady. |
| Wound healing | Cannot describe how a cut heals. | Knows a scab forms but cannot order the stages of healing. | Orders the stages of wound healing — clotting, inflammation, new tissue, remodeling — and explains what each stage accomplishes. |
| Innate vs. adaptive immunity | Cannot tell innate defenses from adaptive ones. | Names white blood cells or antibodies but confuses the fast, general response with the slower, specific one. | Distinguishes innate from adaptive immunity, names the white blood cells and antibodies involved, and explains how vaccination trains the adaptive response. |
| Lab technique (structure ID & immune-case reasoning) | Cannot locate a skin structure on a model or slide, or cannot begin an immune-response case. | Points to a structure or names a defense but cannot connect it to the function or reason through the case. | Locates integumentary structures on a model or slide, defends each structure→function link, and reasons through an immune-response case from exposure to recovery. |
| Integration (cross-domain) | Treats the science as isolated facts; makes no cross-domain connection. | Names a link to history, reading, or writing but cannot defend why it matters. | Connects the unit to its anchor across History · Reading · Writing (plus chosen electives) and defends why the connection matters. |
“This is the dermis — you can see blood vessels, a hair follicle, and a sweat gland sitting in the connective tissue under the epidermis. When the body overheats, those vessels widen and the sweat glands pour out sweat to shed heat. That’s the skin doing thermoregulation, not just covering.”
“It’s skin. There are layers. The top one is… the outside? I know sweat comes out somewhere.”
You demonstrate this unit by identifying integumentary structures on a model or a prepared slide — and by reasoning aloud through an immune-response case, from exposure to recovery — not on a multiple-choice test. A criterion counts as mastered only when you can both find the structure at the bench and justify the anatomy and physiology behind it. Mastery is demonstrated, not awarded.
A 5-page clipboard packet — unit overview, key terms, the mastery rubric, anchor examples, and a score sheet you can print and grade against.