cos chapter 3 Flashcards
what does elastin do for the skin
it gives the skin its flexibility and elasticity
the ______ is the outer most and thinnest layer of the skin and is made up of five layers stratum corneum-stratum lucidum-stratum granulosum-stratum spinosum and stratum greminativum
the epidermis
the skin gets it strength form and flexibility from two fibers found in within the___
dermis
it gives the body smoothness and contour
subcutaneous tissue
______ exclusively transmit impulses from the brain or the spinal cord to the muscles glands
motor nerve fibers
they control the flow of sebum to the surface of the skin
secretory nerve fibers
the ___ is the deepest layer of the dermis that supplies the skin with oxygen and nutrients
reticular layer
sensation
one of the six principal functions of the skin
skin color whether fair medium or dark depends primarily on
melanin
glands that are connected to the hair follicles and secrete sebum are called
sebaceous glands
____ is a fibrous protein that is also the principal component of the skin and nails
keratin
____ consist of a secretory coil and a tube like sweat duct that ends at the skins surface to form the sweat pore
sudoriferous glands
difference in genetic skin colors among people due to
the amount of melanin activated in the skin and the way it is destituted
sebum
fatty or oily secretion that lubricates the skin and preserves the softness of the hair
what role does the barrier function play a role in the skin
it keeps the skin moist by preventing water evaporation
___ is a type of melanin red to yellow in color
pheomelanin
excretion
perspiration from the sudoriferous glands is expelled through the skin
what will most likely slow the weakening of collagen and elastin fibers and help the skin look younger longer
keeping the skin free of disease
the ___ is a protective barrier made up of sebum lipids sweat and water that form a hydrolipidic film to protect the skin from drying out from exposure to external factors that could damage it
acid mantle
____ refers to the tiny grains of pigment deposited into cells in the stratum germinativum layer of the epidermis and papillary layers of the dermis
melanin
___ is the skins underlying layer and extends to form the subcutaneous tissue
the dermis
__ excrete perspiration and detoxify the body by excreting excess salt and unwanted chemicals
sudoriferous glands
__ is a medical branch of science that deals with the study of the skin and its nature structure function disease and treatment
dermatology
emotional stress and hormone imbalances is likely to increase ___
the flow of sebum
