The descending pathway from the red nucleus to the lower motor neurons is the tract.

Descending tracts are the pathways by which motor signals are pass through from the brain to lower motor neurones. Thus, all the neurones within the descending motor system are classed as upper motor neurones. The lower motor neurones then directly innervate muscles to produce movement. Their cell bodies are found in the cerebral cortex or the brain stem, with their axons remaining within the CNS.

hello there,

igneous rock formed from below the surface would have more crystals because

answer: because magma cools more slowly than lava