You are dissecting a cadaver. You are tracing an individual neuron as it ascends the spinal cord to the brain. You know that this neuron carries somatic sensory information from an afferent presynaptic neuron. Where will you find its axon terminal?
A. Ascending pathways in the dorsal column of the spinal cord carry information about pain from the back muscles.
B. Somatic sensory information from the left side of the body projects to the left side of the somatosensory cortex.
C. Ascending pathways in the anterolateral column of the spinal cord carry information about fine touch discrimination.
D. All somatic sensory information travels together in a single tract in the spinal cord.
E. All somatic sensory information that reaches the cerebral cortex is first processed in the thalamus.
Answer: E
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