Question

In both the anterolateral pathway and the posterior funiculus medial lemniscal pathway, the axons of the _____ neurons decussate in the CNS

A) Primary

B) secondary

C) tertiary

D) receptors

Answer 1

Decussation means the crossing of neurons from one side to the other in the brain. It is achieved through the axons of secondary neurons. Primary and tertiary neurons are not involved in decussation. Primary neurons detect a stimulus, secondary neurons carry it to the thalamus whereas the tertiary neuron carries stimulus to the somatosensory cortex.

Thus, the correct choice should be:

In both the anterolateral pathway and the posterior funiculus medial lemniscal pathway, the axons of the ___secondary__ neurons decussate in the CNS.