the integumentary system Flashcards

Diagrams from the text book, with structures of the integumentary system pointed out. (38 cards)

0
Q

stratum granulosum

A

Below corneum
flattened cells
Contain Keratohyaline granules

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1
Q

Hypodermis

A

Adipose
Insulator
Superficial fascia

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2
Q

Langerhans’ cells

A

Dendritic cells

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3
Q

thin skin

A

Covers the rest of the body

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4
Q

epidermis

A

keratinized stratified squamous epithelium
outermost shield of body
avascular

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5
Q

stratum spinosum

A

Below granulosum

Contain thick bundles of intermediate filaments

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6
Q

stratum corneum

A

made of about 30 layers of tightly packed dead cells= keratin for protection

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7
Q

functions of integumentary system

A
Protection
Body temp regulation
Excretion
Production of vitamin d
Sensory reception
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8
Q

stratum basale

A

attached to underlying dermis

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9
Q

apocrine sweat glands

A

Sweat glands
Axillary, anal, genital
Body odor

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10
Q

melanocytes

A

make melanin for skin color

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11
Q

dermis

A

tough, made of fibrous connective tissue
Two regions
Papillary and reticular

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12
Q

kerantinocytes

A

make keratin- protective

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13
Q

squamous cell carcinoma

A

Arises from the keratinocytes of the stratum spinosum

Appears as a lesion, reddened

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14
Q

stratum lucidum

A

only in think skin, clear

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15
Q

Merkel cells

A

Tactile epithelial cells

sensory reception for touch in conjunction with sensory neuron

16
Q

malignant melanoma

A

most deadly and life-threatening
Cancer of melanocytes
Invasive
Moles

17
Q

sebum

A

oily substance secreted by sebaceous glands(skins oil glands)

18
Q

eccrine sweat glands

A

Sweat glands
Palms, soles, and forehead
Open at the surface at pore

19
Q

papillary layer

A

Areolar

dermal ridges due to papilla (little cone shaped projections)

20
Q

recticular layer

A

Dense irregular

21
Q

basal cell carcinoma

A

most common type
Dome shaped, develop into ulcers
Grow slowly. Hardly metasize
Cells of stratum basale invade dermis and hypodermis

22
Q

Thick skin

A

Covers palms and soles, no hair follicles

Stratum lucidum

23
Q

Nail

A

Scalelike modification of the epidermis

Dead, keratin used cells

24
Cuticle
Eponychium
25
Lunule
White crescent on nail
26
Hair follicles
Extend from the epidermal surface into the dermis
27
Hair follicle receptors
Sense movement of hair
28
Pacinian corpuscle
Lamellar corpuscle | Deep pressure receptors
29
Sensory receptors
Touch
30
Arrector pili
This muscle contracts in response to cold and fear, causes the hair to stand on end
31
Vellus
Fine, short | Body hair of women and children
32
Terminal
Longer coarser hair of scalp, and public regions, legs, arms and chest of men
33
Hair follicle growth cycle
Active growth phase: newly growing hair pushes out old hair, causing it to be shed This is followed by a resting phase in which the hair matrix is inactive On scalp, follicles stay active for 4 years
34
Meissners corpuscle
Fine touch receptors
35
First degree burns
Only epidermis | Includes redness swelling and pain
36
Second degree burns
Epidermis and upper part of dermis | Blisters
37
Third degree burns
Full thickness burns | Entire thickness of skin, appears white red or blackened