Hormones Flashcards
What is adrenaline.
Adrenaline is the fight or flight hormone produced in the adrenal gland, just above the kidneys.
What does adrenaline do
It increases the supply of oxygen and glucose to cells in the brain and muscles. This prepares you to fight or flight.
What are hormones
Hormones are chemical molecules released into the blood. Hormones control cells and organs that need constant adjustment.
What is the system that contain all your glands
The endocrine system.
What is the pituitary gland
It is the master gland that instructs the other glands to release hormones that bring about change.
What is the difference between nerves and the hormones.
Nerves act fast for short times over a large area. Hormones are slower action act for longer,
And act in a more general way.
How does oestrogen prevent fertility.
Keeps levels permanently high so FSH is released halting egg development.
What does progesterone do
Reduces fertility. Is used as a contraception method
What does LH do
Stimulates ovulation (egg release) and stimulates production of progesterones
What and Where is excess glucose stored.
It is stored as glycogen in the liver and muscle celsl
What is type 1 diabetes
Where your pancreas produces little or no insulin
What is type 2 diabetes
It where you become resistant to your own insulin.
What hormones control glucose levels
Insulin and glucogon
What does insulin do
It causes glucose to be taken into liver (or muscle) cells and converted into glycogen for storage as glycogen is insoluble so will not effect osmosis in cells
Why is too much glucose a problem
Your cells will swell up as the water balance in cells is off meaning water goes into cell via osmosis so cells burst.
