In Focus: The Skin

Published on 4th April 2018

FUNCTION

Protection
Heat Regulation
Synthesis of Vitamin D
Secretion
Elimination
Sensation

ANATOMY – 3 layers

Epidermis
Dermis
Subcutaneous

THE EPIDERMIS – 5 layers

Stratum germinativum – basal layer
Stratum spinosum – prickle cell layer
Stratum granulosum – granular layer
Stratum lucidum – clear layer
Stratum corneum – cornified/horny

THE DERMIS – 2 layers

Papillary
Reticular

SUBCUTANEOUS

Mainly adipose and areolar tissue

THE GLANDS OF THE SKIN

Sebaceous
Sweat: Eccrine or Apocrine

SENSORY RECEPTORS

There are many types of sensory receptors - pain, temperature, light touch
and pressure – and they vary in numbers in different areas of the body

THE HAIR

Protection
Warmth
Defence

MELANIN

A pigment produced by melanocytes in the epidermis, which acts as a
protection against the harmful effects of the sun

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