Endocrine system Flashcards
1
Q
Endocrine system
A
system that instructs glands to release hormones directly into the bloodstream
2
Q
gland
A
an organ in the body that synthesises substances such as hormones
3
Q
hormones
A
Powerful chemical substances that circulate in the bloodstream and only affect target organs. They are produced in large quantities but disappear quickly.
4
Q
fight or flight response
A
the way an animal responds when stressed. The body becomes ready to fight an aggressor or flee
5
Q
adrenaline
A
a hormone produced by the adrenal glands. it has a strong affect on the cardiovascular system - stimulating the heart rate, contracting blood vessels and dilating air passages
