SOLUTIONS TO EXERCISES, LESSON 1
1.
Subcutaneous. (para 1-2a)
2.
Epidermal. (para 1-2a)
3.
Epithelial. (para 1-4d(2))
4.
Sweat acting with bacteria on skin causes odor. (para 1-3c(2)(b))
5.
Arrector pilorum muscles contract pulling the hairs into a vertical position. This
muscle contraction has made the skin around the hair shaft raise a little, and we
see "goose bumps." (para 1-3a(3)(d))
6.
Sebaceous glands. (para 1-3c(1))
7.
Too much sebum accumulates in the sebaceous glands. When air reaches this
fatty accumulation, oxidation takes place and the fatty substance turns black.
(para 1-3c(1))
8.
Stratum corneum. (para 1-2b(2)(e))
9.
Keratin. (para 1-2b(2)(e))
10.
Sensory receptors.
Hair follicles. (para 1-2c(1))
11.
Stretch.
Return to original shape. (para 1-2c(2)(b))
12.
You are correct if you listed any three of the following:
Storehouse for water and fat.
Insulation protecting the body from heat loss.
Pads the body giving it form and shape and protecting the body from blows.
Pathway for nerves and vessels. (para 1-2d)
13.
To protect. (para 1-3a(1))
14.
About five million hairs. (para 1-3a(2))
15.
About 100,000 hairs. (para 1-3a(2))
16.
Medulla.
Cortex.
Cuticle. (para 1-3a(3)(a))
17.
Air.
Pigment. (para 1-3a(4))
18.
Hair. (para 1-3a(1))
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