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Gross Anatomy > Integumentary System > Flashcards

Integumentary System Flashcards

1
Q

Accessory Structures of the Skin

A

Hair, Nails, Glands- sebaceous, eccrine sweat, apocrine

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2
Q

Types of Tissues of Skin

A

Epithelium, CT, Muscles, Blood Vessels, Nerve Tissue

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3
Q

Functions of Skin

A

Protection, Prevention, Regulation, Sensation, Immune Function, Production of Vit D

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4
Q

Epidermis

A

maximally keratinized stratified squamous epithelium

composed of keratinocytes

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5
Q

Stratum Basale

A

Deepest layer of epidermis

single layer of cuboidal cells

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6
Q

How long does it take for Keratinocytes to be completely renewed?

A

3-4 weeks

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7
Q

Melanocytes

A

in stratum basale

make melanin

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8
Q

Merkel Cells

A

in stratum basale

respond to continuous touch stimuli

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9
Q

Stratum Spinosum

A

has polyhedral keratinocytes (more flattened)

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10
Q

Desmosomes

A

connects cells of stratum spinosum to plasma membrane

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11
Q

Langerhans Cells

A

modified macrophages in stratum spinosum

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12
Q

Stratum Granulosum

A

has kerato-hyalin granules

more prominent in thick skin

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13
Q

Stratum Lucidum

A

only in thick skin

cells begin to degenerate

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14
Q

Stratum Corneum

A

cells completely filled with keratin, have no nuclei or organelles- dead

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15
Q

Dermis

A

contains blood vessels, nerves, afferent sensory receptors, Meissner corpuscles, free nerve endings

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16
Q

Hypodermis

A

aka Subcutaneous

contains loose CT, Adipose, N, A, V

17
Q

Thick Skin

A

over palms and soles
stratum corneum very thick
no hair follicles

18
Q

Papillary Layer of Thick Skin

A

superficial

Loose CT

19
Q

Reticular Layer of Thick Skin

A

deeper

dense irregular CT

20
Q

Epidermal Rete Ridge

A

part of epidermis that projects into dermis

21
Q

Dermal Papilla

A

part of dermis that projects into epidermis

22
Q

Thin Skin

A

Covers whole body except palms and soles

has hair and sebaceous glands

23
Q

Pacinian Corpuscle

A

respond to vibration stimuli
in hypodermis
most abundant in fingers and toes

24
Q

Meissner Corpuscle

A

sensitive to fine touch

in dermis, mainly thick skin

25
Q

Clear Cells

A

Melanocytes, Merkel Cells, Langerhans Cells

26
Q

Sebaceous Gland

A

simple branched acinar glands
most numerous in scalp and face
secrete Sebum into hair follicle

27
Q

Holocrine Secretion

A

entire cell disintegrates

Sebaceous glands

28
Q

Sebum

A

lubricates skin

coats and protects hair shafts from becoming brittle

29
Q

Eccrine Gland

A

sweat glands

coiled tubules

30
Q

Apocrine Sweat Glands

A

simple coiled tubular glands, larger than eccrine
release by apocrine secretion
aka sexual scent glands
axilla, areola, perianal, genital areas

31
Q

Apocrine Secretion

A

release by shedding part of apical cytoplasm

32
Q

Hair Follicle

A

make hair and maintain growth

from hypodermis to epidermis

33
Q

Nails

A

keratinized sheet on the tip of each digit

Gross Anatomy (30 decks)

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