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Dermis > Dermis > Flashcards

Dermis Flashcards

1
Q

What protein is responsible for the elasticity of the skin?

A

Elastin

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2
Q

What is the hydrophilic gel like substance that supports the dermis

A

Hyaluronic acid

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3
Q

What protein is responsible for the tone of the skin?

A

Collagen

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4
Q

What is the mesh like protein fiber that makes up 5% of the dermis?

A

Reticulan

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5
Q

What are some other names for the dermis?

A

True Skin/ Cutis

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6
Q

What are the two layers of the dermis

A

Papillary layer and Reticulary layer

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7
Q

Looped capillaries and tactile corpuscles are located with in the?

A

Dermal Papillae

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8
Q

What humectant can hold 100x its weight in water?

A

Hyaluronic Acid

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9
Q

Made of glycosaminoglycans and proteins and is contained in the dermis is

A

Ground substance

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10
Q

Swelling?

A

Edema

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11
Q

Fat cells?

A

Adipose tissue

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12
Q

Itching?

A

Pruritus

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13
Q

Redness?

A

Erythema

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14
Q

What are the four specialized cells of the dermis and the functions?

A

Mast Cell -(histamine and heparin) inflammatory response.

Lymphocyte- produces antibodies

Macrophage- keeps us safe from disease and foreign substances

Fibroblast- produces collagen& stimulates

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15
Q

8 structures found in the dermis and explain their function.

A

Adipose tissue- (fat cells) insulation and energy.

Blood Vessels- transports blood and carries oxygen & nutrients to the cell, removes wastes.

Lymph Vessels- Removes wastes and filters extra fluid and returns back into the blood stream.

Sebaceous glands- produces sebum

Sudoriferous Glands-excretes wastes and toxins

Hair follicle- protects and regulates the body with temperate in transport of sebum.

Arrector Pilli Muscle- causes goose bumps , attached to the hair follicle.

Nerve ending- detects sensations

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16
Q

hair root?

A

hair located below the skin

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17
Q

medula

A

inner most layer of the hair shaft

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18
Q

actual nail, made up of hard keratin

A

nail plate

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19
Q

transitional phase of hair growth

A

catagen

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20
Q

location of the hair with in the skin

A

hair follicle

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21
Q

soft, fine hair found on women and children

A

vellus

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22
Q

also known as appendages of the skin

A

deriavatives

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23
Q

hair found on the fetus

A

lanugo

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24
Q

nail that extends off the finger

A

free edge

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25
Q

active phase

A

anagen

26
Q

lubricates areas of high friction

A

apocrine glands

27
Q

slender outgrowths of the skin and scalp

A

hair

28
Q

layer of the hair shaft that contains keratin and melanin

A

cortex

29
Q

opening on the surface of the skin

A

follicular ostia

30
Q

excretes waste

A

sudoriferous glands

31
Q

resting phase

A

telogen

32
Q

located beneath the nail plate

A

nail bed

33
Q

visible portion of the nail matrix

A

lunula

34
Q

outer protective layer of the hair shaft

A

hair cuticle

35
Q

produces sebum

A

sebaceous glands

36
Q

the hair located above the skin

A

hair shaft

37
Q

location of growth for the nail

A

nail matrix

38
Q

softens, lubricates, and protects the surface of the skin

A

sebum

39
Q

technical term for nail

A

onyx

40
Q

what is hair made up of ?

A

Hard keratin

4% sulfur on hair
2% sulfur on skin

41
Q

Four functions of hair

A

Temperature of regulation
Protection
Transportation of substances
sensations of touch

42
Q

Anagen

A

Hair is ACTIVE-ly growing and producing new cells.
Bulb is attached firmly to dermal papillae
Mitosis* Wax *

43
Q

Catagen

A

Hair detaches from the dermal papillae and dies, transistional phase.

44
Q

Telogen

A

Resting phase,

Hair moves up the follicle in preparation for shedding

45
Q

Follicular Ostia

A

The opening on the surface of the skin which the hair extends

46
Q

Hair follicle

A

A tube like space within the skin where hair is located

47
Q

Hair Bulb

A

The matrix of living mitotic cells that creates the hair root.

48
Q

Hair root

A

Part of the hair found under the skin

49
Q

Hair shaft

A

The hair that is found above the skin

50
Q

Cuticle

A

The outer scaly protective layer of the hair shaft

51
Q

Medulla

A

the inner most layer of the hair shaft , not present in all hair.

52
Q

Lanugo( Location and wax yes or no)

A

Found on fetus’ will fall off and be replaced with vellus or terminal hair.

53
Q

Vellus(location and wax yes or no)

A

Face and body

54
Q

Terminal(location and wax y or no )

A

head, brows, lashes, legs, underarms, genitals, body of men.

55
Q

four functions of the nail

A

Protection of fingers and toes
aids
self defense
decoration

56
Q

Appocrine Gland (5 functions)

A 
Attached to hair follicle 
Responsible for body odor when mixed with bacteria
produces alkaline substance
found in underarm and pubic regions
active at puberty
produce pheromones
57
Q

Eccrine Glands

A

cools the body through perspiration and evaporation
active at birth
free standing not attached to hair follicle
high concentration on palms and soles
found all over body
acidic substance

58
Q

mature hair is known as ?

A

club hair

59
Q

Structures of dermis?

A

FAT BOYS LIVE ON SAINT HELENS AVENUE NORTH

Fat cells
Blood vessels
lymph vessels 
sebaceous glands
sudoriferous glands 
hair follicle 
arrector pili muscle 
nerve endings
60
Q

Histamine vs Heparin

A

Histamine causes edema and pruritus

Heparin causes erythema and heat

Dermis (1 decks)

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