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histology > cells of epidermis > Flashcards

cells of epidermis Flashcards

1
Q

4 cells under epidermis

A

keratinocytes, melanocytes, langerhans cells, & merkel cells

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2
Q

40,000 to 70,000 m.w.

A

keratinocytes

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3
Q

principal cells

A

keratinocytes

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4
Q

other term for keratinocytes

A

Epidermocytes

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5
Q

synthesize keratin

A

keratinocytes

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6
Q

Synthesis and release of the brown pigment

A

melanocytes

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7
Q

in melanocytes what is the brown pigment that is released?

A

melanin

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8
Q

melanocytes are infrequently scattered in this layer

A

stratum basale

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9
Q

melanocytes contains

A

tyrosinase

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10
Q

tyrosinase of melanocytes are for?

A

melanin synthesis

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11
Q

run in spaces
between keratinocytes of stratum spinosum

A

melanocytes

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12
Q

Macrophage of the skin

A

langerhans cells

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13
Q

dendric cells

A

langerhans cells

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14
Q

true or false: langerhans cells are present in some of the layers of epidermis

A

false (present in all layers of epidermis )

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15
Q

what granule does can langerhans cells be identified

A

birbeck granules

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16
Q

rod-like with regular cross-
striations, one end distends in a vesicle (tennis racket)

A

birbeck granules

17
Q

intercepts microbial invaders in adaptive responses

A

langerhans cells

18
Q

Antigen-presenting cells

A

langerhans cells

19
Q

this is derived from monocytes

A

langerhans cells

20
Q

it represents 2-8% of the cells in the epidermis

A

langerhans cells

21
Q

this cells are most clearly seen in spinous layer

A

langerhans cells

22
Q

Epithelial tactile cells

A

Merkel Cells

23
Q

Low-threshold mechanoreceptors

A

Merkel Cells

24
Q

main function of merkel cells

A

senses (gentle touch)

25
Q

what cells that is hard to distinguish if compared with merkel cells?

A

melanocytes

26
Q

Presence of dense cored vesicles in the cytoplasm

A

merkels cells

27
Q

merkels are considered ______ that is involved in sensory reception in the skin

A

paraneurons

histology (5 decks)

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