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Anatomy & Physiology Integumentary System

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Slide 1
Anatomy & Physiology Integumentary System
Slide 2
Largest system in the body Largest organ in the body System includes skin, glands, blood vessels, nerves, hair, & nails
Slide 3
Layers of the Skin 1.Epidermis outermost layer 2.Dermis Contains blood vessels, nerves, glands, & hair follicles Covered with papillae (forms ridges & lines) 3.Hypodermis Innermost layer; contains fatty tissue & connective tissue;
Slide 4
Layers of the Skin
Slide 5
Glands in the Skin Sebaceous glands Attached to hair follicles Keeps skin & hair from becoming dry / brittle If blocked with dirt/oil = pimple Sweat glands Coiled tubes extending through the dermis (not attached to hair follicles) Sweat contains water, salts, sm amt of uric acid
Slide 6
Glands in the Skin
Slide 7
Additional Components Nails Protect fingers & toes Made of dead epidermal epithelial cells (has a root) Hair Consists of root and hair shaft Protects & covers body surface Alopecia = permanent hair loss on the scalp
Slide 8
Additional Components Hair erector muscle Muscle connected to each hair follicle Contracts in response to cold, fear, etc. (Goosebumps) Blood vessels Carry blood & brings oxygen to cells
Slide 9
Additional Components Pacinian corpuscle Nerve receptors; respond to pressure, pain, vibration, temp. Located in the hypodermis Melanocyte Cell producing melanin (dark colored pigment that protects skin from UV rays)
Slide 10
Melanocyte Oil gland Sweat gland Pacinian corpuscle Hair erector muscle Hair follicle Hair shaft Blood vessel (artery & vein) Layers (Epidermis, Dermis, Hypodermis)

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