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Integumentary System > Dermis > Flashcards

Dermis Flashcards

1
Q

Dermis

A

•Connective tissue
• Underlies the epidermis

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2
Q

2 layers of the dermis:

A

• papillary layer
• reticular layer

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3
Q

Upper dermal regions contain projections called dermal papillae

A

Papillary layer

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4
Q

Indent the epidermis above
Many projections contain. capillary loops, and other house pain and touch receptors.
On palm and sole surfaces, paillar increase friction and gripping ability.
Fingerprints are identifying films of sweat.

A

Papillae layer

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5
Q

Deepest skin layer

A

Reticular layer

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6
Q

• Blood vessels
• sweat and oil glands
• deep pressure receptors

A

Lamellar corpuscles

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7
Q

Other dermal features

A

• cutaneous sensory receptors
• phagocytes
• collagen and elastic fibers
• blood vessels

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8
Q

Yellow, reddish brown, or black pigments

A

Melanin

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9
Q

Orange-yelloe pigment from some vegetables

A

Carotene

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10
Q

• Red coloring from blood cells in dermal capillaries
• Oxygen content determines the extent of red coloring

A

Hemoglobin

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11
Q

Due to embarrassment inflammation, hypertension, fever, or allergy.

A

Redness (erythema)

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12
Q

Due to emotional stress (such as fear), anemia, low blood pressure, impaired blood flow to an area.

A

Pallor (blanching)

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13
Q

Indicates a liver disorder

A

Jaundice (yellow cast)

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14
Q

Hematomas

A

Bruises (black and blue marks)

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15
Q

Cutaneous glands are all exocrine glands

A

• sebaceous glands
•< sweat glands

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16
Q

•Located all over the skin except for palms and soles
• Produce sebum (oil)
• most have ducts that empty into hair follicles;, other open directly onto skin surface
• glands are actived at puberty

A

Sebaceous (oil) glands

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17
Q

• produce sweat
• widely distributed in skin

A

Sweat (sudoriferous) gland

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18
Q

2 types of sudoriferous glands

A

• eccrine glands
• Apocrine glands

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19
Q

Open via duct to sweat pores on the sklns surface
• produce acidic sweat
• function in body temperature regulation

A

Eccrine gland

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20
Q

•Ducts empty into hair follicles in the armpit and genitals
• Begin to function at puberty
• Release swear that also contains fatty acids and proteins
• Play a minimal role in the body temperature regulation

A

Apocrine glands

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21
Q

• consist of hart keratinized epithelial cells
• melanocytes provide pigment for hair color
• hair grows in the matrix of the hair bulb kn stratum basale

A

Hair

22
Q

• Central medulla
• Cortex sorrounds medulla
• cuticle on outside of cortex

A

Hair anatomy

23
Q

• Heavily keratinized, scale-like modifications of the epidermis
• Stratum basale extends beneath the nail bed, which is responsible for growth
• Lack of pigment makes nails colorless

A

Nails

24
Q

• caused by fungal infection (Tinea pedis)
• Itchy, red peeling skin between the toes

A

• Athlete’s foot

25
Q

• Caused by inflammation of hair follicles
• carbuncles are clusters of boils caused by bacteria

A

• Boils (furuncles) and carbuncles

26
Q

• Caused by human herpesvirus 1
• Blisters itch and sting

A

Cold sores (fever blisters)

27
Q

• Caused by exposure to chemicals that provoke allergic responses
• Itching, redness, and swelling of the skin

A

• Contact dermatitis

28
Q

• caused by bacterial infection
• link, fluid raised lesions around mouth/nose

A

Impetigo

29
Q

Triggered by trauma, infection, hormonal changes, or stress
• red, epiderma lesions covered with dry, silvery scales that itch, burn, crack, or sometimes bleed

A

Psoriasis

30
Q

• Tusse damage and cell death caused by heart
•< Results in loss of body fluids and infection from the invasion of bacteria

A

Burns

31
Q

Body is divided into _____ areas for quick estimation

A

11

32
Q

• Body is divided into 11 areas for quick estimation
•< each area represent s about 8 percent of total body surface area
• The area sorrounding the genitals (the perineum represent 1 percent of body surface area

A

Homeostatic imbalance of skin

33
Q

• only epidermis is damaged
• skin is red and swollen

A

First- degree burn +superficial burn)

34
Q

• epidermis and the superficial part of dermis are damaged
• skin is red, painful, and blistered
• regrowth of the epithelium can pccur

A

Second- degree burn (partial-thickness burn)

35
Q

• destroys epidermis and dermis; the burned area is painless
•requires skin grafts, as regeneration is possible
• burned area is blanched (gray-white) or black

A

Third-degree burn (full thickness burn

36
Q

• extends int deeper tissues (bone, muscle, tendons)
• Appears dry and leathery
• requires surgery and grafting
•< may require amputation

A

Fourth- degree burn,(bone,muscle, tendons)

37
Q

Over _____ percent of body has second-degree burns

A

30

38
Q

Over _____ percent of the body has third or fourth-degree burns

A

10

39
Q

Thirds pr fourth-degree burns of the:

A

Face, hands, or feet, genitals

40
Q

• most common form of cancer in humans
• most important risk factor is overexposure to ultraviolet (UV) radiation in sunlight and tanning beds

A

Skin cancer

41
Q

Cancer can be classified two ways:

A

Benign and malignant

42
Q

Means the neoplasm (tumor) had not spread

A

Benign

43
Q

Means the neoplasm has invaded other body areas

A

Malignant

44
Q

Most common types of skin cancer:

A

• basal cell carcinoma
• squamous cell carcinoma
• malignant melanoma

45
Q

•Least malignant and most common type of skin cancer
• Arises from cells in stratum basale that are altered so that they can no longer make keratin
• lesions appear as shiny, dome-shaped nodules that develop a central ulcer

A

Basal cell carcinoma

46
Q

• Believed to be induced by UV.exposure
• Arises from cells of stratum spinosum
• Lesions appear as scaly, reddened papules that gradually dorm shallow ulcers
• early removal allows a good chance of cure
• mestasizes to limph nodes if not removed

A

Squamous cell carcinoma

47
Q

• most deadly of skin cancers, but accounts for only 5 percent of skin cancers
• arises from melanocytes
• mestasizes rapidly to lymp and blood vessels
• detection uses ABCDE rule for recognizing melanoma

A

Malignant melanoma

48
Q

Two sides of pigmented mole do not match

A

Assymetry

49
Q

A downy hair, covers the boat by the fifth or sixth month of detail development but disappears by birth.

A

Lanugo

50
Q

An oily covering, is apparent at birth

A

Vernix caseosa

51
Q

Small white spots, ate common at birth and disappear by the third week

A

Milia

52
Q

May appear during adolescence

A

Acne

Integumentary System (3 decks)

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