CH 10 Integumentary System (part 2) Flashcards

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1
Q

Stratum Lucidum

A
  • layer immediately superficial to the stratum granulosum
  • clear due to the accumulation of keratin fibers in cell cytoplasm
  • not present in all species, but found in areas of high wear and tear like the foot pads
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2
Q

Stratum Granulosum

A
  • layer immediately superficial to the stratum spinosum
  • cells contain keratin granules in their cytoplasm
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3
Q

Stratum Spinosum

A
  • layer immediately superficial to the stratum basale
  • thickest in hairless regions and areas of high wear and tear
  • keratinization and desquamation begin here
  • aka prickle or spinous layer
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4
Q

Keratinization

A

the development of the hard, protein constituent of hair, nails, epidermis, horny structures, and tooth enamel

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5
Q

Desquamation

A

the process in which cell organelles gradually dissolve

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6
Q

Stratum Basale

A
  • aka stratum germinativum
  • deepest or basal layer that continually multiply to replenish cells lost from the epidermal surface
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7
Q

Cubodial

A

cube-like cells arranged in rows

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8
Q

Dermis

A

layer directly deep to the epidermis

  • aka the corium
  • composed of blood and lymph vessels, nerve fibers, and accessory organs of the skin
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9
Q

The dermis contains connective tissue which is composed of

A
  • fibroblasts
  • collagen
  • histiocytes
  • mast cells
  • perception
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10
Q

Fibroblasts

A

fiber - productin cells

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11
Q

Collagen

A
  • major fiber in the dermis
  • tough, flexible, fibrous protein found in the skin, bone cartilage, tendons, and ligaments
  • Kolla (glue) + -gen (to produce)
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12
Q

Histiocytes

A
  • phagocytic cells that engulf foreign substances
  • aka tissue macrophages
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13
Q

Mast cells

A

cells that respond to insult by producing and releasing histamine and heparin

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14
Q

Histamine

A

chemical released in reponse to allergens that causes itching

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15
Q

Heparin

A

Anticoagulant chemical released in response to injury

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16
Q

Ceruminous glands

A

modified sweat glands located in the ear canal

-secrete cerumen (earwax)