Multiple Choice
After leaving the optic chiasm, the optic tracts primarily extend to which of the following structures?
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12. The Central Nervous System
Introduction to the Central Nervous System
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Which of the following is a structural component of the spinothalamic pathway in the central nervous system?
A
Dorsal root ganglion
B
Cerebellar cortex
C
Optic chiasm
D
Anterior horn of the spinal cord
Verified step by step guidance1
Understand the spinothalamic pathway: The spinothalamic pathway is a sensory pathway in the central nervous system responsible for transmitting pain, temperature, and crude touch sensations from the body to the brain.
Identify the structural components of the spinothalamic pathway: The pathway involves neurons that originate in the peripheral nervous system and ascend through the spinal cord to the brain. Key structures include the dorsal root ganglion, spinal cord, thalamus, and cerebral cortex.
Analyze the options provided: Evaluate each option to determine if it is part of the spinothalamic pathway. For example, the dorsal root ganglion contains the cell bodies of sensory neurons, which are integral to the pathway.
Eliminate unrelated structures: The cerebellar cortex is involved in motor coordination, the optic chiasm is part of the visual pathway, and the anterior horn of the spinal cord is associated with motor neurons, not sensory transmission.
Select the correct answer: Based on the analysis, identify the dorsal root ganglion as the structural component of the spinothalamic pathway.
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