THE SKIN OR INTEGUMENTARY SYSTEM

Remember the outer portion of the skin is an example of what type of tissue?

Epithelia Tissue

PRODUCTION OF VITAMIN D FUNCTIONS OF THE SKIN PROTECTION THERMOREGULATION CUTANEOUS SENSATION PRODUCTION OF VITAMIN D BLOOD RESERVOIR EXCRETION

LAYERS OF THE SKIN EPIDERMIS DERMIS HYPODERMIS

STRATIFIED SQUAMOUS EPITHELIUM EPIDERMIS THICK KERATINIZED STRATIFIED SQUAMOUS EPITHELIUM 4-5 SUBLAYERS

LAYERS OF THE EPIDERMIS STRATUM BASALE STRATUM SPINOSUM STRATUM GRANULOSUM STRATUM LUCIDUM STRATUM CORNEUM

STRATUM BASALE THE DEEPEST EPIDERMAL LAYER A SINGLE ROW OF LIVING CELLS RAPID CELL DIVISION 10-25% OF THESE CELLS ARE MELANOCYTES

STRATUM BASALE

STRATUM SPINOSUM SEVERAL LAYERS OF LIVING CELLS CELL DIVISION IS SLOWER THAN BASALE

STRATUM SPINOSUM

STRATUM GRANULOSUM THIN, LIVING LAYER OF CELLS KERATINOCYTES WATERPROOF IN THIS LAYER

STRATUM GRANULOSUM

LOCATED ONLY IN THICK SKIN (PALMS OF HANDS & SOLES OF FEET) STRATUM LUCIDUM DEAD CELLS LOCATED ONLY IN THICK SKIN (PALMS OF HANDS & SOLES OF FEET)

STRATUM LUCIDUM

STRATUM CORNEUM DEAD CELLS SERVES TO PROTECT

STRATUM CORNEUM

HAIR FOLLICLES, OIL & SWEAT GLANDS ARE FOUND HERE THE DERMIS HAIR FOLLICLES, OIL & SWEAT GLANDS ARE FOUND HERE

EPIDERMIS DERMIS

HAIR & ITS FUNCTIONS WARMTH; IT PREVENTS HEAT LOSS DETECT INSECTS ON THE SKIN PROTECTION FILTER PARTICLES

FACTS ABOUT HAIR ABOUT 100,000 IN THE SCALP ABOUT 30, 000 IN A MAN’S BEARD RATE OF HAIR GROWTH AVERAGES 2 mm/WEEK HAIR LOSS AVERAGES 90 HAIRS/DAY

SEVERE EMOTIONAL TRAUMA HAIR LOSS ALOPECIA: HAIR THINNING AND BALDNESS CAUSES OF HAIR LOSS HIGH FEVER SURGERY SEVERE EMOTIONAL TRAUMA CERTAIN DRUGS EXCESSIVE VITAMIN A CHEMOTHERAPY DRUGS RADIATION GENETICS

POOR NUTRITION (ESPECIALLY LACK OF ENOUGH PROTEIN) MOST IMPORTANT POOR NUTRITION (ESPECIALLY LACK OF ENOUGH PROTEIN) HORMONAL IMBALANCES