Integumentary System

65

Epidermis

66

Hair bulb

67

Exposed shaft of hair

68

sebaceous gland duct

69

sebaceous gland

70

Arrector pili muscle

71

hair root

72

Internal root sheath

73

external root sheath

74

matrix

75

hair papilla

76

hair follicle

77

Free edge

78

Hyponychium

79

Nail bed

80

Lateral nail groove

81

Lunula

82

eponychium

83

nail root

84

Eponychium

85

lunula

86

nail body

87

hyponychium

88

Phalanx

55

Dermis

56

Papillary layer

57

Reticular layer

58

Hypodermis or subcutaneous layer

59

Stratum corneum

60

stratum lucidum

61

stratum granulosum

62

stratum spinosum

63

stratum basale or stratum germinativum

64

epidermis

List the seven functions of the skin

Protection from injury and chemicals, defense against diseases, prevention of dehydration, maintenance of body temperature, excretion of waste, reception of stimuli, vitamin D synthesis

What is the epidermis made of?

Keratinocytes, melanocytes

What is the purpose of sebum gland

oil the hair, lubricate the skin, forms oil film that reduces water loss, also inhibits bacterial and fungal growth

Describe where the eccrine or merocrine sweat glands is found and it’s functions.

releases perspiration on the part of the skin that is open to the surface

Functions: cooling, excess water, protection from disease organisms

Describe where the apocrine is found and what it does

associated with hairs, produces thick, sticky, initially odorless secretions but certain bacteria begin to decompose these secretion causing it to stink

Describe where the ceruminous glands are found and what it does

Are found in the ear and secrete cerumen or ear wax

Describe the mammary glands

production of milk, related to apocrine sweat glands

What are the three things that determine skin color

hemoglobin, carotene, melanin

Describe a 1st degree burn

a sunburn, epidermis remain intact causing mild inflammation with redness and swelling. Can be treated with cold water

Describe a 2nd degree burn

maybe superficial or deep dermal burns. May cause blistering and as result is less capacity of regeneration and greater probability of scarring

Describe a 3rd degree burn

portions of the epidermis, dermis, and subcutaneous tissues are destroyed. Skin may appear charred, bright red, or leathery. Besides loss of fluid, infection is of good concern and requires immediate attention

What is Basal cell carcinoma?

Most common types of skin cancer, cell in the basal layer of the epidermis are altered and malfunction. These epidermis cells migrate into the dermis and subcutaneous tissues eroding away tissues and forming ulcers.

What is squamous cell carcinoma?

begins in prickly cells of the stratum spinosum. Most frequently occur on parts of the body that are exposed to sun. If condition is untreated, metastasis may occur

What is malignant melanoma?

occurs in melanocytes and can spread rapidly and may cause death within a few months. Can arise from moles as well