Role Of Skin And Hormones Flashcards
How does your skin respond when you are too hot?
Lots of sweat is produced - when it evaporates it transfers energy from your skin into the environment, cooling you down
Blood vessels close to the surface of the skin widen - this is called vasodilation and it allows more blood to flow near the surface so it can transfer more energy into the surroundings which cools you down
Hairs lie flat
How does your skin respond when you are too cold?
Very little sweat is produced
Blood vessels near the surface in the skin constrict. This means less blood flows near the surface, so less energy s transferred to the surroundings
You shiver, which increases your rate of respiration which transfers more energy to warm your body
Hairs stand on end to trap an insulating layer of air, which helps keep you warm.
What is vasodilation?
When the blood vessels close to the surface of the skin widen to let you cool down
What is vasoconstriction?
Vasoconstriction is when the blood vessels constrict when you are too cold
Where is adrenaline sourced?
Adrenal glands
Where is insulin sourced?
Pancreas
Where is testosterone sourced?
Testes
Where is progesterone sourced?
Ovaries
Where is oestrogen sourced?
Ovaries
What is the role of adrenaline?
Readies the body for a flight or fight response
What is the role of insulin?
Helps control the blood sugar levels
What is the role of testosterone?
Main male sex hormone
What is the role of progesterone?
Supports pregnancies
What is the role of oestrogen?
Main female sex hormone
What are the effects of adrenaline?
Increases heart rate, blood flow to muscles and blood sugar levels
