5.2.19

Thermoregulation - Body Hair

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Body Hairs

Each hair on the body is controlled by a hair erector muscle.

Illustrative background for Too hotIllustrative background for Too hot ?? "content

Too hot

  • When we are too hot, the hair erector muscle relaxes, causing the hair to lie flat.
Illustrative background for Too coldIllustrative background for Too cold ?? "content

Too cold

  • When we are too cold, the hair erector muscle contracts, causing the hair to stand on end (which pull on the skin giving you goosebumps).
  • When all the hairs are standing on end, they trap an insulating layer of air around the body.

Jump to other topics

1Cell Biology

1.1What's in Cells?

1.2Cell Division

1.3Transport in Cells

2Organisation

2.1Principles of Organisation

2.2Enzymes

2.3Circulatory System

2.4Non-Communicable Diseases

2.5Plant Tissues, Organs & Systems

3Infection & Response

4Bioenergetics

5Homeostasis & Response

5.1Homeostasis

5.2The Human Nervous System

5.3Hormonal Coordination in Humans

5.4Plant Hormones

6Inheritance, Variation & Evolution

6.1Reproduction

6.2Variation & Evolution

6.3Genetics & Evolution

6.4Classification

7Ecology

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