ANS Flashcards
(52 cards)
CNS consists of
brain and spinal cord
Integration and command center
of the body
brain and spinal cord
PNS consists of
peripheral nerves branching out from CNS
connects CNS to all other locations in the body
peripheral nerves
sensory information travels in – division of PNS
afferent
motor info travels in – division of PNS
efferent
info processing
CNS
Efferent division includes –
somatic nervous system and autonomic nervous system
two types of nerves that form PNS
12 pairs of cranial
31 pairs of spinal
neuron aka
neuron cell, nerve fiber
core component of CNS and PNS
neuron
In CNS, neurons connect to each other to form
–
neural networks.
In PNS, neurons connect to –
muscle or organs.
function of dendrites
receive info/respond to stimuli
cell body aka
soma
cell body contains–
nucleus, cytoplasm,
organelles
function of axon
carries electrical signal
(action potential) away from cell
body
function of cell body
integrates incoming signal and generates outgoing signal to axon
AP carried in –
one way only
The difference in electric
potential between the interior
and the exterior of a cell
membrane potential
membrane potential: outside is –
positive
membrane potential: inside is –
negative
resting potential
-70 mV
Neurotransmitters are –
released from neurons to communicate with
muscle, organs, or other neurons by binding to
specific receptors in the membrane on the
postsynaptic side of the synapse or effect organ.
endogenous chemicals
