anatomy & physiology integumentary system. largest system in the body largest organ in the body...

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Anatomy & Physiology Integumentary System

Author: miles-frederick-goodwin

Post on 22-Dec-2015




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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
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  • 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
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  • 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
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  • Glands in the Skin
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  • 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
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  • 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)