GENERAL HISTOLOGY

Detailed explanation-1: -The ascending tracts include the dorsal column-medial lemniscus system, the spinothalamic system, and the spinocerebellar system. These tracts carry sensory information from the periphery, such as pain, touch, and temperature to the brain.

Detailed explanation-2: -They are found running along the dorsal, lateral, and ventral columns of the white matter. The main role of the ascending tracts of the spinal cord is to transmit somatosensory information. There are two types of afferent information conducted by the tracts: exteroceptive and proprioceptive.

Detailed explanation-3: -The white matter of the spinal cord contains a mixture of ascending (sensory or afferent) and descending (motor or efferent) tracts.

Detailed explanation-4: -Ascending pathways transport sensory information in afferent pathways from the body to the brain. Afferent is derived from ‘ad’ (toward) and ‘-ferre-’ (to carry).

Detailed explanation-5: -The lateral corticospinal tract (LCST) is the largest descending motor pathway. It begins in the cerebral cortex, receiving a range of inputs from the primary motor cortex, premotor cortex and supplementary motor areas.