Hormonal control Flashcards
what is a hormone
hormones are chemical messengers released directly into the blood
they are carried in the blood to other parts of the body
what do hormones control
things in organs and cells that need constant adjustment
where are hormones produced
various glands called endocrine glands these make up your endocrine glands
what hormones does the pituitary gland produce
many hormones - regulate body conditions
called the master gland because these hormones act on other glands
directing them to release hormones that bring about change
what hormone does the thyroid produce
thyroxine
regulates the rate of metabolism, heart rate and temperature
what hormone does the adrenal gland produce
adrenaline
used to prepare the body fora fight or flight response
what is a fight or flight response
adrenaline is released in response to stressful or scary situations.
you brain detects this and sends nervous impulses to the adrenal glands - produce adrenaline
this gets the body ready for fight or flight by triggering mechanisms that increase the supply of oxygen and glucose to cells in the brain and muscles
what hormone does the pancreas produce
insulin
glucagon
regulates the blood glucose level
what hormone does the ovaries produce
oestrogen
progesterone
what hormone does the testes produce
testosterone
controls puberty and sperm production in males
name the main differences between nerves and hormones
nerves have a faster action whereas hormones have a slower action
nerves act for a very short time and act on a very precise area
hormones act for a long time and act in a more general way
what is stored in the liver as sugar
glycogen
if blood glucose level is too high
insulin is released
if blood glucose level is too low
glucose is released
what age does type 1 occur
4-7 years
11-14 years