Download Nervous System Overview WS

Name: ___________________________________________________________ Date: _____________________________ Period: ________
Nervous System Overview WS
1. Indicate which cell type is identified by the following descriptions.
A. Neurons
B. Neuroglia
____________ 1. Support, insulate, and protect cells
____________ 2. Demonstrate irritability and conductivity, and thus transmit electrical messages from
one are of the body to another area
____________ 3. Release neurotransmitters
____________ 4. Includes microglial, oligodendrocytes, astrocytes, and ependymal cells
____________ 5. Can be unipolar, multipolar, or bipolar
2. Match the anatomical terms with the appropriate descriptions of functions.
A. Axon
B. Axonal terminal
____________ 1. Releases neurotransmitters
C. Dendrite
D. Myelin Sheath
E. Cell body
____________ 2. Conducts electrical currents toward the cell body
____________ 3. Increases the speed of impulse transmission
____________ 4. Location of nucleus
____________ 5. Generally conducts impulses away from the cell body
3. Match each term with the appropriate description.
A. Afferent neuron
F. Nerve
B. Internueron
C. Efferent neuron
D. Neuroglia
Neurotransmitter
G. Nodes of Ranvier H. Schwann cells
I. Synapse
J. Stimuli
E.
____________ 1. Specialized cells that myelinate the fibers of neurons found in the PNS
____________ 2. Junction or point of close contact between neurons
____________ 3. Neuron found between sensory and motor neurons
____________ 4. Gaps in the myelin sheath
____________ 5. Neuron that conducts impulses away from the CNS to muscles and glands
____________ 6. Changes, occurring inside or outside the body, that affect nervous system functioning
____________ 7. Neuron that conducts impulses toward the CNS from the body periphery
____________ 8. Chemicals released by neurons that stimulate other neurons, muscles, or glands
____________ 9. Cells that support the nervous system
4. List and explain the 3 major function of the nervous system.
1. ______________________________________________________________________________________________________________
______________________________________________________________________________________________________________
2. ______________________________________________________________________________________________________________
______________________________________________________________________________________________________________
3. ______________________________________________________________________________________________________________
______________________________________________________________________________________________________________
5. Neuron Diagram
a. Label the neuron using the following words.
Myelin sheath
Dendrites
Axon terminals
Cell body
Schwann cell
Axon
b. Using a GREEN colored pencil, draw arrows to indicate the direction of impulse transmission
along the neuron’s membrane.