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Anatomy > Chapter 5 > Flashcards

Chapter 5 Flashcards

1
Q

Integumentary system

A

Skin system

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2
Q

Cutaneous membrane

A

Skin, outer epidermis and inner dermis

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3
Q

Accessory structures

A

Originate in dermis, hair, nails, glands

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4
Q

Hypodermis

A

Subcutaneous layer, separates the integument from the deep fascia around organs

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5
Q

Keratinocytes

A

Most abundant in epidermis

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6
Q

Thin skin

A

Covers most of body surface, 4 layers of keratinocytes

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7
Q

Thick skin

A

Occurs in palms and soles of feet, contains a 5th layer (statum lucidum)

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8
Q

Stratum basale

A

Innermost epidermal layer

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9
Q

Basal cells

A

Dominate stratum basalt, stem cells

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10
Q

Merkel cells

A

Found in hairless skin

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11
Q

Melanocytes

A

Pigment cells

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12
Q

Keratin

A

Protein, basic structural components of hair and nails

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13
Q

Keratohyalin

A

Dense granules that cross link keratin fibers

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14
Q

Keratinization

A

The formation of protective superficial layers of cells filled with keratin

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15
Q

Insensible perspiration

A

The process of losing 1 pt of water a day without noticing it

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16
Q

Sensible perspiration

A

Produces by active sweat glands

17
Q

Carotene

A

Orange-yellow pigment that accumulates in epidermal cells

18
Q

Melanin

A

Brown, yellow-brown, or black pigment produced by melanocytes

19
Q

Cyanosis

A

When the skin looks blue from the hemoglobin releasing oxygen

20
Q

Cholecalciferol

A

Vitamin D3, cholesterol related steroid

21
Q

Papillary layer

A

Superficial layer of dermis, consists of areolar tissue, contains the capillaries, lymphatics, and sensory neurons

22
Q

Reticular layer

A

Deep to papillary, consist of an interwoven mesh work of dense irregular connective tissue containing both collagen and elastic fibers

23
Q

Dermatitis

A

Inflammation of the skin that primarily involves the papillary layer

24
Q

Cleavage lines

A

Collagen and elastic fibers are arranged in parallel bundles oriented to resist the forces applied to the skin during normal movement

25
Q

Hypodermis

A

Stabilizes the position of the skin in relation to underlying tissues; made off areolar and adipose tissue

26
Q

Hairs

A

Nonliving structures on the surface of the skin

27
Q

Hair follicles

A

Produce hair

28
Q

Root hair plexus

A

Sensory nerves that surround the base of each hair follicle

29
Q

Arrector pili

A

Smooth muscle cells contract forcing hair to stand straight

30
Q

Hair root

A

The portion that anchors the hair into the skin

Anatomy (6 decks)

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