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Anatomy > Chapter 5 Part 2 > Flashcards

Chapter 5 Part 2 Flashcards

1
Q

Located on thin skin- root plexuses are touch receptors - protect scalp from uv Ryas and decrease heat loss- consist of dead Keratinzed cells

A

Hairs

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2
Q

Superficial portion above skin -root; deeper portion penetrates skin

A

Shaft/root

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3
Q

Raises hairs causing “goose bumps”

A

Arrector pilli muscles

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4
Q

Surrounds hair root

A

Hair follicle

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5
Q

Base of hair follicle, contains matrix, site of cell division

A

Bulb (hair)

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6
Q

Partial or complete hair loss

A

Alopecia

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7
Q

Develop from stratum basale of epidermis

A

Skin glands

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8
Q

Associated with hairs in thin skin -absent in thick skin- secrete sebun (oil) preventing dryness -increased activity may cause acne

A

Sebaceous glands

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9
Q

3-4 million in body -release sweat onto skin surface -eccrine glands; regulate body temperature

A

Sudoriferous (sweat) glands

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10
Q

Mainly located in Axilla and produce a more viscous secretion

A

Apocrine glands

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11
Q

Located in external ear produce cerumen (ear wax)

A

Ceruminous glands

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12
Q

Tightly packed, dead, Keratinized epidermial cells

A

Nails

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13
Q

Visible portion

A

Nail body

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14
Q

Whitish, crescent shaped portion

A

Lunula

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15
Q

Site of cell division

A

Nail matrix

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16
Q

Located in palms,Palmer surface of digits and soles

A

Thick (hairless) skin

17
Q

Lack stratum lucidum

A

Thin (hairy) skin

18
Q

Controls body temperature by negative feedback

A

Thermoregulation

19
Q

Lowers body temp

A

Sweating

20
Q

Conserve body heat

A

Constrictions of blood vessels in dermis

21
Q

Blood reservoir; store 8 to 10% of blood at rest in and adult- protection;barrier to microbes and chemicals -sensation; sense stimuli -excretes and absorbs substances -produces vitamin D

A

Skin functions

22
Q

Only involves epidermis and does not bleed- stratum cells break contact with basement membrane and start migrating towards each other

A

Superficial wound

23
Q

Stops the migration of cells once they contact one another

A

Contact inhibition

24
Q

Stops the migration of cells once they contact one another

A

Contact inhibition

25
Q

Wound extends beyond epidermis

A

Deep wound

26
Q

Inflammatory, migratory,proliferative, maturation

A

Deep wound healing 4 phases

27
Q

Blood clot forms and vasodilation increase delivery of phagocytic cells

A

Inflammatory

28
Q

Clot forms scab and fibroblasts begin forming scar tissue

A

Migratory

29
Q

Extensive deposits by fibroblasts

A

Proliferative

30
Q

Scab falls off and epidermis restored

A

Maturation

31
Q

Scar tissue formation occurs

A

Fibrosis

32
Q

Usually contains more fibers,fewer blood vessels, hair and skin glands

A

Scar tissue

33
Q

Most common type, rarely metastasize and usually harmless

A

Basal cell carcinoma

34
Q

Usually develops from existing damaged tissue

A

Squamous cell carcinoma

35
Q

Rarest and most deadly

A

Malignant melanoma

36
Q

Age, skin type, sun exposure and family history

A

Risk factors

37
Q

Graded according to serverity

A

Burns

38
Q

Usually not apparent until late 40’s -decrease number of langerhans cells and sebeceous glands -decreased sweat production -decreased number of functional melanocytes resulting in gray hair

A

Aging

39
Q

Accessory structures

A

Hair,glands,nails

Anatomy (32 decks)

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