WorksheetsNervous System quiz
Total questions: 20
Worksheet time: 14mins
what is satlatory conduction?
polarization
action potential
act of impulse skipping along myelin sheath
depolarization
what happens during the first step of nerve transmission (resting potential)? (select all that apply)
membrane is polarized
(-) K+ inside, (+) Na+ outside
(+) K+ inside, (-) Na+ outside
neuron is at rest
what happens during the second stage of impusle conduction (depolarization)? (select all that apply)
a stimulus causes Na+ chambers to open and Na+ the cells
inside membrane becomes (+)
inside membrane becomes (-)
the neuron becomes depolarized
what happens during action potential (3rd step)? (select all that apply)
if stimulus is strong enough, it skips along the axon of the neuron
neuron perfroms a function
inside becomes (+), outside becomes (-)
the neruon returns to resting potential
what happens during repolarization (step 4)?
K+ channels open, neruon instantly becomes polarized
K+ channels open, K+ moves out, and Na moves back in
K+ channels open, K+ moves in, and Na+ moves back out
this is the last step
what happens during refractory period (step 5)? select all that apply
Na/K pump restores resting potential
provides a period of 'rest' before next impulse
carries out impulse
Na/K pump causes depolarization
what are the fucntions/characteristics of grey matter?
have no myelin
movement, touch
vibration
interneurons
what are the functions/characteristics of white matter?
bundles of myelinated axons
communication routes
touch, vibration
bundles of axons
what are the sensory functions of the cerebral cortex? (select all that apply)
pinpoint location of pain
identify textures
proprioception
reflec arc
what is the function & location of the post central syrus? (select all that apply)
cerebrum, primary sensory area of brain
temporal lobe, primary somatic sensory area of brain
cerebral cortex, primary somatic sensory of brain
temp/touch/sensory receptors
what is the function/location of the POSTcentral syrus
cerebellum, primary motor sensory area
cerebral cortex, primary motor sensory area
cerebellum, motor area
involves thinking about movement
what does CSF do? (select all that apply)
choroid plexus in brain secrets CSF
provides nutrients such as glucose to the spinal cord and brain
drains blood from the brain barrier
froms myelin sheath cells in the brain
what is the correct order of a synaptic connection/conduction?
ion channels open allowing calcium in presynapse, calcium stims release of NTs, NT bind to receptors on post synapse
ion channels open allowing sodium in presynapse, sodium stims release of NTs, NT binds to receptors on post synapse
ion channels open, allowing sodium and calcium in presynapse, NT bind to receptors on post synapse
ion challels open, allwoing potassium in presynapse, potassium stims release of NT's, NT's bind to receptors on post synapse
what are characteristics of the sympathetic divison (select all that apply)?
preganglionic neurons begin in the spinal cord
postganglionic neurons are long, unmyelinated, and produce an intermediate response
postganglionic neurons are short and produce a slow, localized response
preganglionic neurons begin in the brain
what are characteristics of the parasympathetic divison? (select all that apply)
preganglionic neurons begin in the brain and sacral region and are long and near target organs
postganglionic neurons are short and produce a slow, localized response
preganglionic neurons begin in the spinal cord and are long and near target organs
postganglionic neurons are long and produce a fast response
what is a ganglion? (select all that apply?
a structure containing nerve bodies linked by a synpase
approves/rejects signal sent by the brain
approves/rejects signal sent by the spinal cord
control movement
what are the cholingeric receptors (select all that apply)
nicotinic: produce excited response
muscarinic: produce varied response
adrenic: excited by norepenphrine
beta: excited by cortisol
what are the adrenic receptors (select all that apply)
aplha-adrenic: excited by nrp
beta-adrenic: inhibited by nrp
alpha-adrenic : excited by ach
beta-adrenic: inhibited by ach
main neruotransmitter of parasympathetic NS is acetylcholine
true
false
main nerutransmitter of the sympathetic NS is norepinephrine & sometimes acetylcholine
true
false
