Topic 9: Integumentary System - Dermis + Hypodermis Flashcards

1
Q

What are the components of dermis? (4)

A
  • blood vessels
  • nerves
  • glands
  • hair follicles
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2
Q

What are the 2 sublayers of dermis?

A
  • Papillary layer
  • Reticular layer
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3
Q

What type of tissue are the sublayers of dermis made of?

A
  • CT from mesoderm
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4
Q

What are the tissue characteristics of the papillary layer? (3)

A
  • areolar CT
  • vascular
  • has projection into the epidermis called dermal papillae
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5
Q

What does the papillary layer form in thick skin? (2)

A
  • epidermal ridges, or fricction ridges
  • aka fingerprints to improve grips
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6
Q

What does the reticular layer make up?

A

most of the dermis

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7
Q

What is the reticular layer composed of, in terms of tissue? (2)

A
  • dense irregular CT
  • can stretch (ex. stretch marks)
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8
Q

Is the hypodermis part of the skin?

A

NO

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9
Q

What is the hypodermis known as and composed of? (3)

A
  • subcutaneous layer
  • superficial facia
  • adipose
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10
Q

What is fascia?

A
  • CT layers that surround and support organs
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