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What is the structure of skin?
Makes up 7-8%
*Subcutaneous (not skin)
What is the function of skin?
Prevents water loss
Metabolic Regulation (vitamin d)
Excretion by means of Secretion (getting rid of waste)
What are the derivitaves (Accessory organs) of skin?
What is the EPIDERMAL STRATA?
From basement membrane to its surface, reveals several layers or strata.
Deep to superficial:
Stratum lucidum (thick skin only)
Where is thick skin located?
Palms of hands
Soles of feet
Fingers and toes
*Contains sweat glands, no hair follicles or sebaceous glands.
Where is thin skin located?
Covers most of the body. the epidermis lacks the stratum lucidum, so it only has 4 layers.
sebaceous glands and
What are the layers of the EPIDERMIS
What are the layers of the DERMIS?
Where is the SUBCUTANEOUS layer located?
Not considered part of the integument; deep to the dermis; composed of areolar connective tissue and adipose connective tissue
What are the characteristics of the Nail?
What are the 3 zones along the length of a hair?
What are the functions of hair:
Chemical signal dispersal