NEET PG DENTAL EXAM

Detailed explanation-1: -The lateral columns include axons that travel from the cerebral cortex to contact spinal motor neurons. These pathways are also referred to as the cortico-spinal tracts.

Detailed explanation-2: -The upper motor neuron has its cell body in the primary motor cortex of the frontal lobe and synapses on the lower motor neuron, which is in the ventral horn of the spinal cord and projects to the skeletal muscle in the periphery.

Detailed explanation-3: -The corticospinal tract, AKA, the pyramidal tract, is the major neuronal pathway providing voluntary motor function. This tract connects the cortex to the spinal cord to enable movement of the distal extremities.

Detailed explanation-4: -ie all the neurones within the descending motor system are classed as upper motor neurones. Their cell bodies are found in the cerebral cortex or the brain stem, with their axons remaining within the CNS[1].