Function of the Skin Flashcards
How do anti-bacterial substances help with protection?
becomes present in sebum and sweat that keeps the bacteria from multiplying.
(this bacteria that invades the skin are attacked by macrophages and leukocytes).
How does Keratin help with protection?
it prevents dehydration and absorption of excess water.
waterproof nature
How does melanin help with protection?
they protect against damage from Ultra-Violet radiation.
What are the functions of the skin?
Protection, transdermal adsorption, synthesis of vitamin D, excretion, sensory reception, temperature regulation, wound healing.
Describe transdermal absorption.
ability to absorb drugs and/or chemicals across epidermis which could be good or dangerous.
why is nitroglycerine absorbed in transdermal absorption?
it absorbed to relieve heart pain.
Why is scopolamine absorbed in transdermal absorption?
to reduce motion sickness.
what do nicotine patches do?
help to quit smoking.
Why are hormones absorbed in transdermal absorption?
for the purpose of birth control.
what are some toxins that can be dangerous in transdermal absorption?
poison ivy, organic solvents, and metal salts.
Describe synthesis of vitamin D.
when exposure to ultraviolet light can help to convert a form of cholesterol into vitamin D.
What is the purpose of perspiration for the skin?
eliminates some organic wastes, salts, and water from the body.
What happens in the sensory receptors of the skin?
nerve endings detect stimuli that get interpreted as touch pressure, temperature, or pain.
Describe thermo-regulation.
regulation of body temperature by the skin and other organs.
How does excessive heat affect thermo-regulation?
It triggers the thermo-receptors in the skin to send nerve signals to a temperature control region in the hypothalamus of the brain.
