Hormones Flashcards
What are hormones?
Chemical molecules released directly into the blood
Name the endocrine glands
- thyroid
- pituitary gland
- adrenal gland
- ovaries
- testes
- pancreas
Compare nerves and hormones
- nerves are fast
- hormones are slow
- nerves act for a short time
- hormones act for a long time
- nerves are precise
- hormones act in a more general way
What does the thyroid do?
Produces thyroxine
Regulates metabolism, heart rate and temperature
Why does the ovaries do?
Produce oestrogen
Involved in the mensural cycle
What do the testes do ?
Produce testosterone
Controls puberty and sperm production
What does the pancreas do?
Produces insulin
Regulates blood sugar
What do the adrenal gland do ?
Produces adrenaline
Prepares body for “fight or flight”
What is the endocrine system composed of
•glands which secrete chemicals called hormones directly into the blood stream
What does thyroxine do?
Regulates metabolism
Stimulates protein synthesis
Growth and development
What does adrenaline do?
Increases heart rate
Increases supply of glucose and oxygen
When is adrenaline stimulated?
In response to scary and stressful things
