Multiple Choice
Which structures make up the central nervous system (CNS)?
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12. The Central Nervous System
Introduction to the Central Nervous System
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Which structures make up the central nervous system (CNS)?
A
Brain and spinal cord
B
Brain and peripheral ganglia
C
Cranial nerves and spinal nerves
D
Sympathetic and parasympathetic divisions
Verified step by step guidance1
Step 1: Understand the definition of the central nervous system (CNS). The CNS consists of the main control centers of the nervous system responsible for processing and integrating information.
Step 2: Identify the primary structures involved in the CNS. These are the brain and the spinal cord, which together coordinate sensory data and motor commands.
Step 3: Differentiate the CNS from the peripheral nervous system (PNS). The PNS includes structures outside the brain and spinal cord, such as peripheral ganglia, cranial nerves, spinal nerves, and autonomic divisions.
Step 4: Recognize that peripheral ganglia, cranial nerves, spinal nerves, and the sympathetic and parasympathetic divisions belong to the PNS, not the CNS.
Step 5: Conclude that the correct structures making up the CNS are the brain and spinal cord.
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