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WorksheetsNervous System
Total questions: 20
Worksheet time: 10mins
CNS is the?
brain and spinal
nevres
axon
astrocyte
Astrocyte
connect to blood vessels
phagocyte
axon
sheath
Oligodendrocytes align with nerve fibers and provide myelin
true
false
Somatic nervous system is voluntary
true
false
Autonomic nervous system contains
smooth muscle
cardiac muscle
skeletal
Efferent goes away from the brain?
true
false
Microglial cells help to?
phagocytize bacteria cells
provides structural support
produce myelin
Which direction does the nerve impulse move from the cell body?
away
to
What do the nodes of Ranvier do?
help speed up impulse
help slow down impulse
protecting the axon
insulating the axon
Scattered throughout the cytoplasm of membranous sacs are called?
chromoatphilic substance
neurofibromas
neurilemma
neurofibrils
What produces myelin?
Schwann cell
Axon
Nucleus
Dendrite
Where is the trigger zone?
Start of axon
End of axon
Middle of axon
Central process
What starts the initial depolarization of the axon?
(select 2)
Ligandgated Sodium Channels
Potassium Channels
Voltage gates sodium channels
Threshold
Biochemical that the synaptic transmission is carried by is?
Neurotransmitters
Postsynaptic
Synapse
Presynaptic neuron
What is threshold?
stimulus needed to cause an impulse
the inhibitory process
the refractory period
build up of axons
can an impulse happen in a relative refactory period?
yes
no
I don't know
An impulse can happen in an absolute refactoring period.
True
False
what is gray matter?
the brain cells
neurological cells
epemdymal cells
glial cells
How does sensory receptors gather information?
detecting changes in the temperature and light
magic
stimulating nervous cells
effectors
Where is the Schwann cell?
on the axon
on the dendrites
on the nucleus
