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Parts of the Skin Click on a start to learn more about its’ function.

Parts of the Skin Click on a start to learn more about its’ function. Hair Follicle, Arector Pili Muscle, Sebaceous Gland . This part of the skin is strongly associated with the skin’s temperature regulation function. Hair Follicle-sac from which the hair grows

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Parts of the Skin Click on a start to learn more about its’ function.

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  1. Parts of the Skin Click on a start to learn more about its’ function.

  2. Hair Follicle, ArectorPili Muscle, Sebaceous Gland • This part of the skin is strongly associated with the skin’s temperature regulation function. • Hair Follicle-sac from which the hair grows • ArectorPili-band of muscle tissue which connects the hair follicle to the dermis; when stimulated (by cold or fight/flight response), the muscle will contract and cause the hair to become more perpendicular to the surface • Sebaceous Gland-empties an oily secretion called sebum into the hair follicle near the surface of the skin

  3. Sweat Gland & Sweat Pore • The sweat system is strongly associated with regulating body temperature and secreting urea. • Sweat/Apocrine Gland-small tubular structures situated within and under the skin that discharge sweat through tiny openings called Sweat Pores • Sweat-transparent, colorless, acidic fluid with a peculiar odor; contains some fatty acids and mineral matter

  4. Nerve Fiber, Corpuscles, Sensory Nerve Endings • These parts are associated with the sense of touch. • Nerve Fiber-the axon and/or dendrites of a neuron • Nerve Endings-the ending of the neuron where a touch is detected • The functions of the various Corpuscles are shown in the picture.

  5. Major Layers of the Skin • Epidermis-upper or outer layer of skin cells; made up mostly of dead skin cells with the ability to flake off; non-vascular • Dermis-inner layer of the skin that contains blood and lymph vessels, hair follicles, and glands • Hypodermis/Subcutaneous-below the skin; consists of fatty tissue that provides insulation

  6. Layers of the Epidermis • Stratum Corneum-outermost layer; composed of migrated dead skin cells; filled with keratin • Stratum Germinativum/Basale-deepest and thinnest layer of the epidermis; considered epidermal “stem cells” • Stratum Spinosum-keratinization begins here • Dermal Papilla-extensions of the dermis into the epidermis; forms the human fingerprint

  7. Blood and Lymph Vessels • Arteries-bring blood toward the skin cells • Veins-take blood away from the skin cells • Lymph Vessels-associated with skin’s function to prevent infection and help support growing skin cells

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