Spinal Cord and Nerves Worksheet
Grade 12 Science worksheet covering the structure and function of the spinal cord and peripheral nerves.
Includes
Standards
Topics
Spinal Cord and Nerves
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Date:
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Read each question carefully and answer to the best of your ability. Use complete sentences for short answer questions.
1. Which of the following is NOT a primary function of the spinal cord?
Conduction of nerve impulses
Integration of reflexes
Processing of complex thoughts
Locomotion
2. The gray matter of the spinal cord primarily consists of:
Myelinated axons
Cell bodies, dendrites, and unmyelinated axons
Neuroglia
Connective tissue
Refer to the diagram of the spinal cord below to answer the following questions.
3. The outermost protective layer of the spinal cord is the .
4. Sensory information enters the spinal cord via the root.
5. Motor commands exit the spinal cord via the root.
6. The white matter of the spinal cord is primarily responsible for processing sensory input.
True
False
7. Spinal nerves are mixed nerves, containing both sensory and motor fibers.
True
False
8. Describe the difference between ascending and descending tracts in the spinal cord.
9. Explain the role of interneurons in a reflex arc.
Match the term on the left with its description on the right.
10. Dorsal Root Ganglion
a. Bundle of axons in the CNS
11. Plexus
b. Swelling containing cell bodies of sensory neurons
12. Nerve
c. Network of intersecting spinal nerves
13. Tract
d. Bundle of axons in the PNS