A&P Ch. 5 The Integumentary System

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amholland
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238190
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A&P Ch. 5 The Integumentary System
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2013-10-01 15:30:55
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Integumentary System Terms
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  1. Integumentary System
    Skin and its derivatives; provides the external protective covering of the body.
  2. Hypodermis (superficial fascia)
    Subcutaneous tissue just deep to the skin; consists of adipose plus some areolar connective tissue.
  3. Keratin
    Fibrous protein found in the epidermis, hair, and nails that makes those structures hard and water resistant; keratohyaline.  Greek kera = horn
  4. Melanin
    Dark pigment formed by cells called melanocytes; imparts colors to skin and hair.  Melan = black
  5. Dermis
    Layer of skin deep to the epidermis; composed mostly of dense irregular connective tissue. derm = skin
  6. Papilla
    small, nipple-like projection; e.g., dermal papillae are projections of dermal tissue into the epidermis. papill = nipple
  7. Carotene
    Yellow to orange pigment that accumulates in the stratum corneum epidermal layer and in fatty tissue of the hypodermis.
  8. Hemoglobin
    Oxygen-transporting protein of erythrocytes.
  9. Sudoriferous Gland (sweat gland)
    Epidermal gland that produces sweat. sudor = sweat
  10. Eccrine Glands
    Sweat glands abundant on the palms, soles of feet and the forehead.  ek'rin; "secreting"
  11. Merocrine Glands
    Glands that produce secretions intermittently; secretions do not accumulate in the gland.
  12. Apocrine Sweat Gland
    The less numerous type of sweat gland; produces a secretion containing water, salts, proteins, and fatty acids.
  13. Mammary Glands
    Milk-producing glands of the breast.
  14. Sebaceous Glands (oil glands)
    Epidermal glands that produce an oily secretion called sebum.  se-ba'shus; "greasy"
  15. Sebum
    Oily secretion of sebaceous glands.
  16. Hair Follicle
    Structure with outer and inner root sheaths extending from the epidermal surface into the dermis and from which new hair develops.  folli = bag
  17. Arrector Pili
    Tiny, smooth muscles attached to hair follicles; contraction causes the hair to stand upright.  ah-rek'tor pi'li; "rise of hair"
  18. Alopecia
    Baldness.
  19. Cutaneous Sensory Receptors
    Receptors located throughout the skin that respond to stimuli arising outside the body; part of the nervous system.

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