Integumentry System Flashcards

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1
Q

Anatomy of the skin

A
  1. Epidermis (5 layers in it)
  2. Dermis
  3. Subcutis
  4. Accessory structures: glands, nails, hooves, beaks, wool, fur, feathers
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2
Q

Epidermis

A
  • Stratified SQ cells
  • Without blood vessels, nerves, or glands in it
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3
Q

Dermis

A
  • Blood supply and nerves are present here
  • Fibro-elastic framework (collagen)
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4
Q

Function of Epidermis

A
  • Waterproof skin
  • Protection from chemicals and organisms
  • Melanocyte pigment (melanin) protects the body from UV light
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5
Q

Functions of Dermis

A
  • Thermoragulation: dilation of capillaries, sweat production, and piloerection (“goosebumps”)
  • Sense of touch
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6
Q

Subcutis

A

Adipose and connective tissue

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7
Q

Subcutis function

A
  • Fat storage
  • Strength & elasticity of skin
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8
Q

Glands
Sebum & lanolin

A
  • oils skin and fur
  • elasticity
  • waterproof
  • Mirco-organism balance
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9
Q

Glands
Pheromones

A
  • circumoral glands of cats, peri anal glands of dogs
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10
Q

Glands
Sweat

A
  • cooling mechanism (for some animals)
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