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Anatomy and physiology > integumentary system > Flashcards

integumentary system Flashcards

1
Q

6 functions of integumentary system

A 
Protection
Body temperature
Cutaneous sensation
Metabolic functions
Blood reservoir
Excretion (limited role)
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2
Q

stratified squamous epithelial cells, not vascularized

`

A

epidermis

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3
Q

(irregular) dense connective tissue; vascularized

A

dermis

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4
Q

new epidermis every 25 to 45 days

A

keratinocytes

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5
Q

absorbs UV light and prevents DNA in cells’ nuclei from being damaged

A

melanin

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6
Q

ingest foreign substances and initiate immune response

A

dendritic cells

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7
Q

sensory receptors for touch

A

Tactile Merkel Cells

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8
Q

5 layers of the epidermis

A 
stratum corneum
stratum granulosum
stratum spinosum
stratum lucidum
stratum basale
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9
Q

stratum granulosum function

A

Keratinization of cells begins

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10
Q

stratum spinosum

A

Dendritic cells most abundant

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11
Q

dermis is made up of what?

A

connective tissue proper

nerves and blood and lymphatic vessels

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12
Q

2 layers of dermis:

A

papillary

reticular

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13
Q

dermis papillary layer is made of

A

Loose areolar connective tissue

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14
Q

dermis reticular layer

A

Dense irregular connective tissue

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15
Q

dermal papillae

A

Fingerprints

Dense irregular connective tissue

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16
Q

Dermal folds near joints accommodate movement

A

flexure lines

17
Q

all humans have same number of melanocytes

A

different kind and amount

18
Q

epidermis is transparent in

A

caucasians

19
Q

Blood escaped from vessels and clotted beneath the skin

A

hematoma

20
Q

Pale, fine body hair of infants and adult women

A

vellus

21
Q

Coarser, longer

A

terminal

22
Q

hair Keratinization is complete (dead cells)

A

shaft

23
Q

Keratinization is ongoing (not quite dead)

A

root

24
Q

Large cells and air spaces; only layer with soft keratin (like skin); absent in fine hairs

A

medulla (hair)

25
Q

Several layers of flattened cells (hair)

A

cortex

26
Q

: Single layer of overlapping cells, like roof shingles (hair)

A

cuticle

27
Q

gray hair

A

air bubbles instead of melanin

28
Q

hair matrix

A

Actively dividing cells

29
Q

alopecia

A

autoimmune disease baldness

30
Q

eccrine (merocrine) glands

A

Emotionally induced “cold sweat” starts in palms, soles, armpits

31
Q

apocrine sweat glands

A

axillary (armpits, pubic area, etc.)

mammary glands

32
Q

6 functions

A 
protection
body temp
cutaneous sensation
metabolic function
blood reservoir
excretion
33
Q

skin cancers from at…

A

stratum spinosum, stratum basale

34
Q

rule of 9’s

A

each section of the body each arm, each side of torso is 18%

Anatomy and physiology (21 decks)

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