Nervous System & Homeostasis Flashcards
Name 2 types of effector
-muscles
-glands
Name 3 coordination centres
-brain
-spinal cord
-pancreas
give 3 things all control systems include
-receptors
-coordination centre
-effectors
give 3 internal conditions controlled in homeostasis
-body temperature
-blood glucose concentration
-water levels
what is homeostasis & why is it important
maintenance of a constant internal environment
maintains optimal conditions for cell and organ function, and enzyme activity
function of neurones
carry electrical impulses around the body
what is a synapse
junction between 2 neurones where chemicals (neurotransmitter) is released allowing electrical impulses to cross
give the pathway of a nervous response
stimulus (change in the environment) -> receptor -> coordinator -> effector -> response
why are reflex actions important
for survival and to prevent damage to the body
why are reflex actions rapid and automatic
they don’t involve the conscious part of brain
2 parts of central nervous system
-brain
-spinal cord
function of the nervous system
enables organisms to react to their surroundings and coordinates behaviour
