22,23

22,23



i a The skin O C O I I U IN '■

A Label the diagram.

i a The skin O C O I I U IN '■


hair

epidermis subcutaneous fat nerve fibrę sebaceous gland arrector muscle dermis


blood capillaries porę

hair bulb sweat gland duet

hypodermis hair follicle


Ni iw mnich mechanism a-k with function 1-10. One function has three itinchiiiiliims.

hmction

Mechanism

protection against " X

a

collagen and elastin in

walor loss

the dermis

•J

ti

protection against micro-organisms

b

convęrsion of subcutaneous fat

HI

screen from UV rays

erection of hairs

Hi

sliield against

L d

greasy horny layer

mechanical abrasion

e

nerve endings in the dermis

6

monitoring of the cnvironment

f

epidermal melanin

|n

formation of vitamin D

9

sweat production

Hi

temperaturę regulation

h

'

evaporation of sweat increased celi division

8

energy storage

and replacement

|9|

excretion of mainly

i

synthesis from 7-

salt and water

dehydrocholesterol

10

protection against stretching

u

compounds from sweat and sebaceous glands

i

control of dermal

blood flow

M


Section 3: Body Systems 2    23


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