WorksheetsNerves and Action Potentials
Total questions: 10
Worksheet time: 15mins
The term central nervous system refers to the:
autonomic and peripheral nervous systems
brain, spinal cord, and cranial nerves
brain and cranial nerves
spinal cord and spinal nerves
brain and spinal cord
The Schwann cell forms a myelin sheath around the:
dendrites
cell body
nucleus
axon
nodes of Ranvier
The neuron processes that normally receive incoming stimuli are called:
axons
dendrites
neurolemmas
Schwann cells
satellite cells
Impulse conduction is fastest in neurons that are:
myelinated
unmyelinated
sensory
motor
cerebral
The ability to respond to a stimulus is termed:
polarized
irritability
depolarized
conductivity
all-or-none response
The gap between two communicating neurons is termed:
synaptic cleft
cell body
effector
Schwann cell
node of Ranvier
An action potential is caused by an influx of these ions into the cell:
potassium
sodium
calcium
magnesium
both potassium and sodium
Which of the following is the correct sequence in a typical reflex arc?
effector, afferent neuron, integration center, efferent neuron, receptor
receptor, afferent neuron, integration center, efferent neuron, effector
effector, efferent neuron, integration center, afferent neuron, receptor
receptor, efferent neuron, integration center, afferent neuron, effector
receptor, afferent neuron, efferent neuron, integration center, effector
The substance that is released at axonal endings to propagate a nervous impulse is called:
an ion
nerve glue
a neurotransmitter
the sodium-potassium pump
an action potential
Which one of the following is the correct sequence of events:
- the membrane becomes depolarized
- sodium channels open and sodium ions diffuse in
- the membrane become repolarized
- potassium channels open and potassium ions diffuse inward while sodium is actively transported out of the cell
3,2,4,1
2,1,4,3
2,1,3,4
1,2,4,3
4,1,3,2
