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Inetgumentary System
Page 1
16
Anatomy
11th Grade
10/03/2010

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Cards

Term
Inetgumentary system is composed of...
Definition
skin, nails, hair, sweat glands and sebaceous glands
Term
structure of skin has __ main layers
Definition
2
Term
epidermis
Definition
  • outer layer
  • usually thin (exception: palm of hand and soles of feet)
  • divided into five "strata" (layers)
Term
order of strata from superficial to deep
Definition
  • stratum corneum
  • stratum lucidum
  • stratum granulosm
  • stratum spinosum
  • stratum basale
Term
stratum corneum
Definition
  • most superficial
  • dead cells filled with keratin
Term
keratin
Definition
a water repellant protien
Term
stratum lucidum
Definition
  • clear layer found in loose skin only
  • contains eleiden cells, a precursor to keratin
Term
stratum germinativum
Definition
  • stratum spinosum
  • stratum basale
Term
stratum spinosum
Definition
  • 8-10 layers of irregularly shaped cells
  • contains prominent intercellular bridges/desmosomes
  • rich in rna
Term
stratum basale
Definition
  • cells divide by mitosis
  • continuously replaces cells lost
Term
dermal-epidermal junction
Definition
cells of epidermis join the cells of the dermis
Term
dermis
Definition
second inner layer, thinner layer
Term
dermal papillae
Definition
layer of dermis that pushes into the epidermis to form a unique pattern for each individuals fingertip
Term
langer's cleavage lines
Definition

patterns formed naturally in the skin

surgical incision parallel to the lines reasults in less stress and tends to heal more quickly

Term
stretch marks
Definition
torn dermis resulting from a rapid increase in size
Term
arrector pili muscle
Definition
the contraction of this muscle results in the hair stranding on end, pulling the skin, causing goose bumps
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