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Endocrine System
Term | Definition |
---|---|
hormone | chemical messages produced by hormones that instruct the body to do something or respond to something |
gland | main organs of the endocrine system that produce hormones |
internal stimuli | something inside an organism that causes that organism to react. Examples: hunger, sugar level, internal temperature |
external stimuli | something outside an organism that causes that organism to react. Examples: touching something extremely hot/cold, oxygen levels in the air, amount of sunlight |
adrenal gland | gland located above the kidneys that produces adrenaline when stressed. Adrenaline gives the organism a temporary boost; associated with fight or flight |
fight or flight | A response by an organism initiated by extreme danger. The organism prepares to fight to the death or escape the threat |
homeostasis | An organism's reactions to changing conditions to keep it's internal conditions at the perfect levels |
secrete | producing and transporting hormones around an organism |
excrete | transporting and releasing waste products from an organism |
endocrine system | Body system made up of glands and hormones that send chemical messages around the body to keep it in homeostasis |