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Intersystems > Skin Path > Flashcards

Skin Path Flashcards

1
Q

5 functions of human skin

A

protection, sensation, thermoregulation, metabolism, immunological

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2
Q

3 layers of skin?

A

epidermis, dermis, hypodermis

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3
Q

layers of epidermis

A
  1. Strateum corneum
  2. Stratum granulosum
  3. Stratum spinosum
  4. Stratum basale
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4
Q

major cell of epidermis?

A

keratinocytes

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5
Q

whats in Stratum corneum?

A

Layer of dead keratinized cells

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6
Q

whats in Stratum granulosum

A

granules. increase keratin

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7
Q

where is the langerham cell most prominent? role?

A

stratum spinousum. APC

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8
Q

why is the stratum spinosum so named?

A

Spinous processes ‘intercellular bridges’ b/w cells is visible.

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9
Q

what is a rete ridge?

A

epidermal downgrowth

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10
Q

what is a dermal papilla

A

dermal upgrowth

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11
Q

where are most of the accessory cells within the epidermis?

A

stratum basale

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12
Q

do dark skinned people have more melanocytes?

A

no they just produce more melanin

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13
Q

what is an apocrine sweat gland

A

found in axillary and genital regions.

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14
Q

what is keratin found in?

A

skin, hair nails

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15
Q

what are erector pilli? where are they?

A

smooth muscle in dermis that extend into base of hair follicle. contract when shivering

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16
Q

what do sebaceous glands do?

A

secrete oil to lubricate and waterproof hair and skin.

17
Q

describe histologically an eccrine sweat gland

A

Lined by single layer of secretyory cells and beneath that myoepithelial cells

18
Q

skin circulation?

A

2 main plexuses.

Papillary plexus - Beneath papillary dermis.

Cutaneous plexus- At junction of dermis and hypodermis.

19
Q

where in the skin are the nerves?

A

dermis

20
Q

where is the thickest skin

A

on back

21
Q

what type of cell is a merkel cell?

A

neuroendocrine

Intersystems (22 decks)

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