Final answer:
The medial descending tracts include the medial lemniscus, medial longitudinal fasciculus (MLF), and the corticospinal tract. These tracts are crucial for sensory and motor processes in the nervous system.
Step-by-step explanation:
In the context of Neuroscience, there are several descending tracts that can be classified as medial. These include the medial lemniscus, the medial longitudinal fasciculus (MLF), and the corticospinal tract.
The medial lemniscus is a fiber tract of the dorsal column system while MLF is responsible for the coordination of eye movements. The medial lemniscus, for instance, extends from the nuclei gracilis and cuneatus to the thalamus. On the other hand, the corticospinal tract, which descends from the cortex through the deep white matter of the cerebrum, has the internal capsule bundle that passes through the caudate nucleus and putamen of the basal nuclei.
After that, it passes through the midbrain as the cerebral peduncles, burrows through the pons, and finally makes up the large white matter tract in the medulla referred to as the pyramids. Most fibers in the corticospinal tract cross over to the opposite side of the brain at the pyramidal decussation. Then the tract separates into two parts, each controlling different domains of the musculature.
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