Stages of regeneration of the skn, following an injury?
contraction occurs, granulation tissue is formed, cells of the stratum germinativum divide and migrate, a scab forms on the surface
Vitamin D effects on other organs
aids normal absorption of calcium and phosphorus
In extensive wound, ___ divides producing mobile cells that invaid deeper areas of injury
Granulation is composed of
a child who skins his knee in a fall has a(n)
the layer of skin that contains the blood vessels and nerves closest to the surface of the skin is the____________layer
the pale-crescent-shaped area at the base of a nail is called the______
the primary function of sensible perspiration is to_______
cool body temperature
the repair of the dermis begins as fobroblasts produce________
___ layer of the skin the contains bundles of collagen fibers, protein elastin, and gives strength
sweat tastes salty because of its____
scar tissue is the result of an ____
Mammary glands are a type of ___ glands
know about the subcutaneous glands
Small glands in the skin that secrete oil into hair follicles and onto the body surface,this makes the hair greasy (oily) and also makes the body sweat and look oily.
Sebaceous and cibous gland
Sebaceous gland: microscopic glands in the skin that secrete an oily/waxy matter, called sebum. found in greatest abundance on the face and scalp, though they are distributed throughout all skin sites except the palms and soles.
know about melanin
Also called pigment, melanin is a substance that gives the skin and hair its natural color.
All of the following are true of perspiration Produced by merocrine sweat glands, except that it _____.
produces the body odor characteristic of "sweating"
accessory structure of skin are____
hair, nails, and multicellular eccrine glands
the layer of hard keratin that coats the hair is termed the___
most abundant cells in the epidermis
sun tan results from
exposure to UV rays, increased production of melanin
the layer of the skin that provides protection against bacteria as well as chemical and mechanical injuries is the________
the nail body covers ___ ?
types of skin cancers include
basal cell, carcinoma, and melanoma
if the papilla of a hair follicle is destroyed ___ happens
no hair grows
cyanosis is indicated by
blush coloration to the skin melanoma or interruptions of the dermal blood supply
the affect of aging are
most body odors is produced by __glands
What are the two components of the cutaneous membrane?
epidermis and dermis
large amounts of keratohyalin will be found in the epidermal layer called
albino individual lacks ability to produce
nail production occurs at the nail
why are elderly people more prone to infections?
there immune system is more weakend
How are epidermal ridges formed?
downward projections of the epidermis into the dermis between the dermal papillae. They also increase the friction and the surface area of the dermis
Water loss due to interstitial fluid penetration through the surface of the skin is termed _____ perspiration.
Deodorants are used to mask the odor of what secretions?
stretch marks occur when
dehydration or extensive distension
____ are macrophages in the epidermis
the layer of the epidermis that contains cells undergoing division is the ______
primary pigments in the epidermis are
melanin and carotene
____ if body temp rises
blood flow is going to increase to the skin/ thermo regulation
Charlie is badly burned in an accident. when he reaches the emergency room, the examining physician finds that he can remove entire hair follicles from charlies arm whe he gently pulls on a hair with his forceps. charlie is suffering from a(n)___burn.
47. wrinkling and sagging in old people is the result of ?
decline of protein elastin/ collagen fibers in the skin weakening
important vitamin formed in sunlight