Anatomy Ch. 5 Integumentary System

Question Answer
List the functions of the skin Protects inner organs, Temperature maintenance,

Synthesis and storage of nutrients, sensory reception,

Excretion and secretion
What causes the different skin color in people (different races)? Melanin production
Skin is blue, poor circulation Cyanosis
Skin is yellow, possible liver malfunction Jaundice
Small internal bleeding Bruises
(T or F) Greater amounts of the pigment “carotene are produced when the skin is exposed to the sun. False, Melanin
(T or F) The most abundant protein in dead epidermal structures such as hair and nails is “melanin”. False, Karatin
(T or F) “Sebum” is an oily mixture of lipids, cholesterol, and cell fragments. True
(T or F) The oldest epidermal cells in the epidermis are found in the “stratum basale”. False, Stratum Corneum
(T or F) The externally observable part of a hair is called the “root”. False, Hair shaft
(T or F) The “epidermis” provides mechanical strength to the skin False, Dermis
What does the ABCD refer to in reference to assessing pigmented areas for the likelihood of skin cancer? A-Asymmetry, B-Border, C-Color, D-Diameter
What are Sebaceous glands? Oil glands
Where are Sebaceous glands found? In the dermis
What do Sebaceous glands produce? Oily lipid secretion into hair follicles or onto skin
What are Whiteheads and Blackheads? Result of acne, a bunch of sebum accumulated at the top of the skin
Where are eccrine (sweat glands) found? Found in dermis
What do eccrine glands produce? Sweat
Why are they important to homeostasis of the body? Produce sweat which cools down the body during physical activity
Where are apocrine (sweat glands) found? In the hypodermis
What do apocrine glands produce? Secrete products into hair follicles in armpits etc.
Where do apocrine glands release there secretions? The secretion is food for bacteria which creates the oder
When, during development, do they start to function? At puberty
Why doesn't it hurt to cut your fingernails? Because it doesn't have nerves in it
Where do the fingernail and toenails form? In the nail root, an epithelial fold not visible from the surface, in the Lunula
Full thickness burn; epidermal and dermal layers destroyed; skin is blanched 3rd degree burn
Blisters form 2nd degree burn
Epidermal damage, redness, and some pain (usually brief) 1st degree burn
Epidermal and some dermal damage; pain, but regeneration is possible 2nd degree burn
Regeneration impossible; requires graffing 3rd degree burn
A dermatologist is a physician that specializes in the care of the skin. How many different aliments affect the skin? Over 1,000
Red and cracked, itchy, fungal infection Athlete's foot
Large bum on skin from inflamed hair follicle or sebatious gland Boils/Carbuncles
Bumpy blisters, from emotional upset, fever, or UV radiation Cold Sores
Swelling and redness, can produce blisters; allergic response to chemical exposure Contact Dermatitis
Pink raised lesions, bacterial infection Impetigo
Red skin with flaky silver-white patches, triggered by bacterial/viral infections, dry skin, injury to skin, stress Alopecia
Hair turns grey; genetic Graying Hair
Oily secretion Sebum
Outermost layer of epidermis Stratum corneum
Development stimulated by sex hormones Apocrine gland
Epidermal pigment Melanin
Inner layer of skin Dermis
Responds to elevated body temperature Eccrine gland
Pigment-producing cell Melanocyte
Outer layer of skin Epidermis
Gland usually associated with hair follicle Sebaceous gland
Hard protein of nails Keratin
Binds skin to underlying organs Subcutaneous layer
Reproductive layer of epidermis Stratum basale
Process of hardening epidermal cells Keratinization
Tubelike part that forms hair Hair follicle
Causes hair to stand on end Arrector pili muscle
What two kinds of tissues is the skin composed of and what are they made up of? Thin skin- Epidermis, most upper part of the skin; Thick skin- Dermis, lower and thicker part of the skin