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