WorksheetsIntroduction to Nervous System
Total questions: 10
Worksheet time: 6mins
Astrocytes (a neuroglial cell) functions to..
makes cerebral spinal fluid
eats bacteria and cell debris
provides nutrients to neuron cells
makes myelin
Myelin, an insulating material, is found in
cell bodies
dendrites
axon terminals
Schwann cells
The three types of neurons shown in the diagram are
1= interneuron
2= motor neuron 3= sensory neuron
1= sensory neuron 2= motor neuron 3= interneuron
1= interneuron
2= sensory neuron
3= motor neuron
1= motor neuron
2= sensory neuron
3= interneuron
What does the central nervous system use to
determine the strength of a stimulus?
Origin of the stimulus.
Type of stimulus receptor.
Frequency of action potentials.
Size (amplitude) of action potentials.
What is the change of a cell membrane from positive to negative called?
Glycolysis
Action Potential
Temporal Summation
Electrolysis
The critical point at which a stimulus causes an action potential
Synapse
Action potential
Membrane potential
Threshold
In the CNS, glial cells out number neurons.
True
False
In resting potential, neurons have more _________ on the outside of the cell membrane.
K+
NaCl
Na+
Cl-
Action potentials run along the ______ from ______ to ________.
axon
myelin
dendrites
axon terminals
When a membrane potential reach +30mV, ________ channels open, ________ occurs, and ________ channels close.
Sodium, depolarization, potassium
Potassium, depolarization, sodium
Sodium, repolarization, potassium
Potassium, repolarization, sodium
