Integumentary SystemIntegumentary System

Anatomy and Physiology

System Includes

Sweat glands Oil Glands Hair Nail Layers of skin Cutaneous membranes Skin pathogens Sensory receptors

The Skin

The skin is the largest organ on or in the body

Protects the body from foreign agents and germs

Can sense temperature, pain, touch, and pressure

The skin secrete fluids through the sweat glands and sebaceous

The skin has three main layers

Three layers of skin

Skin

Epidermis(the outer membrane

Layer)

Dermis

( the middle layer)

Subcutaneous

(the deepest layer)

Epidermis

Has stratified squamous epithelium, that consist of scale-like cells

Does not have a blood supply or connective tissues

Depends on nourishment from the deeper layers of skin

Contains two cells called Keratin and Melanocytes

The basal layer is the deepest layer within the epidermis

Deeper layers

Dermis Compose of

connective tissues Compose of collagen

fibers

Subcutaneous House cells called

lipocytes Act as an insulation for Act as an insulation for

heat and coldheat and cold Contains fatty tissuesContains fatty tissues

Accessory Organs

Hair Nails Sweat Glands Sebaceous

Hair

Hair ShaftGrows toward the

Skin surface

FollicleHair root

force older keratinCells to move upward

Nails

Nail body is the flat-plate keratin that covers the ends of fingers and toes, or nail bed

Nail root is the base of the nail and protected by the cuticle

The free edge is the edge of the nails

Lunula is the half-circle area at the base of the nail

Sweat Glands

Sudoriferous glands are found throughout the body, and found in the dermis

Sweat duct is the surface of the skin Sweat pore is the opening of the skin

Skin Pathogens

Skin lesions Skin discolorations Skin diseases Skin cancers Burns or infections Skin viruses

Diagnostic Procedures

Clinical Laboratory Tests

Culture and sensitivity

Therapeutic Procedures

Skin Grafting Surgical procedures Plastic surgery

procedures

The End