Question

Which of the following statements regarding pathways for somatic perception projection is correct?

A. The tertiary sensory neurons cross-over the body's midline.

B. The synapse for the secondary to tertiary sensory neuron is within the medulla.

C. The longest of the secondary sensory neurons transmit fine touch and proprioceptive information.

D. Primary sensory neurons from the hands project to a specific region of the somatosensory cortex.

E. Primary sensory neurons that respond to cold sensation project to the same region of the somatosensory cortex.

Answer 1

The correct statement is that primary sensory neurons from the hands project to a specific region of the somatosensory cortex.

Step-by-step explanation:

The correct statement regarding pathways for somatic perception projection is D. Primary sensory neurons from the hands project to a specific region of the somatosensory cortex.

The somatosensory pathways carry peripheral sensations to the brain. The dorsal column system is responsible for touch sensations and proprioception, while the spinothalamic tract pathway is responsible for pain and temperature sensations. In both pathways, the second neuron synapses in the thalamus, and the thalamic neuron projects to the somatosensory cortex.