dermal layers

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Last updated 9:30 PM on 9/9/26
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15 Terms

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dermis (2 layers)

  1. papillary layer

  2. reticular layer

*P comes BEFORE R*

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papillary layers

Superficial dermal layer made of areolar connective tissue

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superficial dermis layer

Papillary Layer

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papillary layer projections

dermal papillae

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7 things papillary layer contains

  1. dermal papillae

  2. capillaries= nutrients to avascular epidermis

  3. merkel cells

  4. pain receptors

  5. sensory receptors = touch+ temp

  6. interlock w epidermal RIDGES =fingerprint

  7. increase friction = GRASP objects


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reticular layer

Deep dermal layer made of dense irregular connective tissue.

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deep dermis layer

reticular layer

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6 components of reticular layer

  1. dense irregular CT

  2. blood vessels

  3. hair follicles

  4. sweat glands

  5. sebaceous glands

  6. lamellar corpuscles = pressure receptor


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3 MAIN things for papillary

  1. superficial

  2. Areolar CT= dermis

  3. dermal papillae


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3 MAIN things for reticular layer

  1. deep

  2. Dense Irregular CT= dermis

  3. blood vessels


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hypodermis

hypodermis= SUBCUTANEOUS layer

DEEP to dermis / NOT part of skin

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hypodermis CT

adipose CT

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3 hypodermis functions

  1. protects= cushion/ padding

  2. supports= thermal insulation/ energy supply

  3. BINDS skin to muscles/bone


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8 parts of thin skin

EPIDERMIS

  1. s. corneum

  2. s. granulosum

  3. s. spinosum

  4. s. basale

  5. keratinized stratified squamous ET = apical deal cells

DERMIS

  1. reticular layer of dermis= dense irregular CT

  2. papillary of dermis= areolar CT

  3. dermal papillae= ridges/fingerprints


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parts of dermis+ hypodermis

  1. subcutaneous layer= ADIPOSE CT

  2. sebaceous gland= THIN skin only

  3. Merocrine/ Eccrine sweat gland

  4. apocrine sweat gland

  5. arrector pili muscle

  6. hair follicles = THIN skin only

  7. Lamellar corpuscle (pacinian)

  8. tactile (meissner) corpuscles= INSIDE dermal papillae