nervous system Flashcards
what conditions need to be optimal
blood glucose concentration
water levels
body tenperature
what does the cns consist of
brain and spinal cord
what is the change in the environment
the stimuli
what is homeostasis
an organisms ability to regulate internal environments so crucial reactions can take place at optimal rate
what are effectors and what do they do
muscles -> contract
glands -> secrete chemicals
what is the gap between two neurones
synapse
what and how goes thru the synapse
neurotransmitters diffuse across as electrical impulses
what is the reflex ac
bypasses brain , quicker , involuntary action
what is the endocrine system
a system full of gland that secrete hormones
how do hormones travel
thru the blood
what’s the differences between endocrine system and nervous system
slower , act for longer
what does the pituitary gland do
controls all the other glands
what does the thyroid do
produces thyroxine , controls body basal metabolic rate
what does the adrenaline gland do
produces adrenalin , increases heart rate , and blood flow
what does pancreas’s secrete
insulin and glucagon
