Intigmentary System Flashcards

1
Q

What are the components of skin?

A
  • skin
  • hair
  • nails
  • glands
  • sensory structures
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2
Q

What is the function of skin?

A
  • protect
  • provide sensations
  • regulate body temperature
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3
Q

What are the different layers of the skin?

A
  • Epidermal Layer
  • Dermal Layer
  • Subcutaneous Layer
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4
Q

What is the epidermal layer composed of?

A

-keratinized stratified squamous epithelial tissue

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5
Q

What are 2 main cells types

A
  • Keratinocytes

- Melanocytes

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6
Q

What are keratinocytes

A

-divide to produce the layers of epithelial calls with the outermost layer being dead cells

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7
Q

What is the function of keratinocytes?

A

-act as a mechanical barrier to prevent; abrasion, invasion by microorganisms, and prevent water loss

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8
Q

What are melanocytes?

A

produce pigment melanin

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9
Q

What is the function of melanocytes?

A

-protects the DNA of keratinocytes from UV light

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10
Q

Describe the dermis layer

A
  • thicker region of the skin

- composed of connective tisse

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11
Q

What are the 2 regions of connective tissue within dermis?

A
  • Papillary region (superficial, thinner)

- reticular region (deep, thicker, tougher)

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12
Q

What components are located in the dermis

A
  • most sensory receptors
  • glands
  • hair follicles
  • blood vessels
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13
Q

What are other names for the subcutaneous layer?

A
  • hypodermis

- superficial fascia

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14
Q

Is the subcutaneous layer considered to be part of the skin?

A

No

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15
Q

What components are found in the subcutaneous layer

A

-many adipocytes
-blood vessels
pressure receptors

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