Multiple Choice
In an introductory study of the nervous system, what are the two main divisions of the nervous system?
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12. The Central Nervous System
Introduction to the Central Nervous System
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In human anatomy, what structures make up the central nervous system (CNS)?
A
Brain and spinal cord
B
Brain, spinal cord, and peripheral nerves
C
Sympathetic chain ganglia and autonomic nerves
D
Cranial nerves and spinal nerves
Verified step by step guidance1
Step 1: Understand the definition of the central nervous system (CNS). The CNS is the part of the nervous system that processes information and coordinates activity throughout the body.
Step 2: Recall that the CNS consists of structures that are enclosed within the skull and vertebral column, providing protection and central control.
Step 3: Identify the two main components of the CNS: the brain, which is housed in the skull, and the spinal cord, which runs through the vertebral column.
Step 4: Differentiate the CNS from the peripheral nervous system (PNS), which includes peripheral nerves, cranial nerves, spinal nerves, and autonomic nerves located outside the CNS.
Step 5: Conclude that the correct structures making up the CNS are the brain and spinal cord only, excluding peripheral nerves, ganglia, and autonomic nerves.
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