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40 terms

A&P Ch. 5

STUDY
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stratum corneum
The epidermal layer that consists almost entirely of keratin is the __________.
germinativium
Cell divisions within the stratum __________ replace more superficial cells which eventually die and fall off.
ear canal
Cerumen is produced by glands located in the __________.
reticular
The layer primarily responsible for the strength of the skin is the __________ layer.
fibroblasts
Which of these cells produce the fibers found within the reticular layer of the dermis?
sweat
Sudoriferous glands are also called __________ glands.
formation of a blood clot
The process of skin repair after injury begins with ___________.
vitamin D
An important vitamin that is formed in the skin when it is exposed to sunlight is_______
keratinocytes
The type of cells that form the strata in the epidermis are___________
goose bumps are formed
When the arrector pili muscles contract,______
reticular layer
The dermis is composed of the papillary layer and the ___________.
cutaneous membrane and accessory structures
The two components of the integumentary system are the
insensible
Water loss due to evaporation of fluid that has penetrated through the skin is termed ________ perspiration.
dendritic cells
________ are cells in the epidermis that are part of the immune system.
stratum germinativium
The layer of stem cells that constantly divide to renew the epidermis is the
keratinized stratified squamous epithelium
The epidermis of the skin is composed of which type of tissue?
melanocytes
_________ store melanin in melanosomes
carotene and melanin
The primary pigments contained in the epidermis are
cyanosis
________signifies that a patient has oxygen starved skin
melanin
The ________ in keratinocytes protects the epidermis and dermis from the harmful effects of sunlight.
vitilgo
Which of the following is not an effect of ultraviolet radiation?
wrinkles
vitiligo
production of cholecalciferol within epidermal cells
chromosomal damage in germinative cells or melanocytes
increased activity by melanocytes
no
Is rickets genetic?
papillary plexus
what does the epidermis receive blood from?
papillary
The layer of the skin that contains the blood vessels and nerves that are closest to the surface of the skin is the ________ layer.
reticular
The layer of the skin that contains bundles of collagen and elastic fibers responsible for the strength of the skin is the ________ layer.
dermatitis
Skin inflammation that primarily involves the papillary layer is termed
medulla
The layer of soft keratin within the hair shaft is the ___________.
cuticle
The layer of hard keratin that coats the hair is termed the
melanocytes
Variations in hair color reflect differences in the pigment produced by
on a fetus
Lanugo is found______
sebaceous
Glands that discharge an oily secretion into hair follicles are ________ glands.
apocrine sweat
The ________ glands in the axilla become active at the time of puberty.
blood flow to the skin increases
What happens if body temperature rises above normal?
nail root
Fingernails grow from which structure?
dermal fibroblasts
Collagen to repair a deep skin wound is produced by __________.
root
Nail production occurs at the nail________
inflammatory
Mast cells are triggering a response to injury during which phase of repair?
fibroblasts
In a penetrating wound, ________ divide to produce mobile cells that repair the dermis.
blood flow to the skin increases
If a fair-skinned person is sunburned, why does his or her skin turn red?
scar tissue
large numbers of collagen fibers and relatively few blood vessels in the injured area result in __________