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Terms in this set (137)
What is the largest organ of the skin
the body?
what is the outer layer of the epidermis
skin called?
hair follicles
what are the accessory
sebaceous glands
organs located on your
sweat glands
skin? (4)
nails
what does your skin's heat, cold, pain & comfort
nerves allow you to feel?
infections
what is your skin always
warding off? it protects your body from harmful environmental
elements
what is your skin constantly old cells in order to make room for new skin growth
shedding?
what does the skin and its associated organs
integumentary system
consist of? hair follicle, nails, sebaceous glands and sweat glands
1) protection
2) water resistance
3) temperature regulation
what are the 7 functions of
4) vitamin D synthesis
the skin?
5) sensation
6) excretion and secretion
7) social functions
, skin is a physical barrier against injury, chemicals,
ultraviolet (UV) rays, microbes, and toxins and is not
what is the function of the easily breached .
skin's protection?
Certain bacteria and other pathogens, called normal !!
ora, populate your skin's surface
You do not swell up every time you take a bath because
what is the function of the
your skin is water resistant. It also prevents water from
skin's water resistance?
leaking out of body tissues.
A network of capillaries in your skin opens up or dilates
(vasodilation) when your body is too hot.
what is the function of the
skin's temperature
When your body is cold, this capillary network narrows
regulation?
(vasoconstriction), blood flow decreases, and your
body retains heat.
As little as 15 to 30 minutes of sunlight each day allows
what is the function of the
your skin cells to initiate the metabolism of vitamin D,
skin's vitamin D synthesis?
which is essential for bone growth and maintenance.
Nerve endings that detect touch, pressure, heat, cold,
what is the function of the pain, vibration, and tissue injury are particularly
skin's sensation? numerous in the skin of your face, fingers, palms, soles,
nipples, and genitals.
what is the function of the Water and small amounts of waste products from cell
skin's excretion & metabolism are lost through your skin by excretion and
secretion? secretion from your sweat glands.
The skin reflects your emotions: it blushes when you are
What is the function of the
self-conscious, goes pale when you are frightened, and
skin's social functions?
wrinkles when you register disgust.
what is the most superficial the epidermis
layer of the skin?
, The epidermis is made of four to five layers of
squamous cells called keratinocytes.
Keratinocytes are formed at the deepest layer of the
epidermis.
When new keratinocytes are formed they cause the
layers above them to move upward.
explain keratinocytes in the
As the keratinocytes move upward they move away
epidermis
from their source of oxygen and nutrients, causing them
to die.
The outer layer of your epidermis is a keratin-packed
cover of compact, dead cells that you continually shed.
Keratin-a tough, scaly protein that is also the basis for
your hair and nails-shields your body from harmful
elements like chemicals and bacteria.
top: stratum corneum
stratum lucidum
stratum granulosum
what are the layers of the stratum spinosum
epidermis? (5)
stratum basale
dermis
(papillary & reticular)
hypodermis (subcutaneous)
keratin
in the lower layers of your
epidermis, cell are filled
other cells produce a brown/black pigment called
with what protein?
melanin!!
determine the color of your skin adn protects its from
what is melanin?
ultraviolet light damage