peripheral nervous system
central nervous system (CNS) consistests of what
brain, spiral cord
peripheral nervous system (PNS) consists of what
somatic nervous system, autonomic nervous system
does somatic nervous system control voluntary or involuntary responses
voluntary
does autonomic nervous system control voluntary or involuntary responses
involuntary
SNS internal or external
external
ANS internal or external
internal
example of what SNS controls
muscle movement
example of what ANS controls
heart rate, respiration and breathing
how many neurones in the SNS
one
how many neurones in yhe ANS
two
what are the two branches of ANS
sympathetic , parasympathic
what situation is sympathetic branch used
preparing body for emergencies
what situsations is the parasympathetic branch used
replenishing stores, conserving energy , non emergency tasks
what does ANS innervate
involuntary activity , vital functions. smooth and cardiac muscle, secretory, gladular tissues.
what does the preganglionic nerve release
acetylcholine
what does acetylcholine bind to
nicotinic acetylcholine receptors
what does the postganglionic nerve release
noradrenaline
what does noradrenaline bind to
adrenergic receptors
what are the two classes of adrenergic receptors
alpha, beta
what does the adrenal goamd secrete
hormones
where does the adrenal goand secrete hormones from
outer cortex , inner medulla