The name Alana is a Celtic baby name. In Celtic the meaning of the name Alana is: meaning harmony, stone, or noble. American Meaning: The name Alana is an American baby name. In American the meaning of the name Alana is: meaning harmony, stone, or noble.aelic Meaning: The name Alana is a Gaelic baby name. In Gaelic the meaning of the name Alana is: This name of uncertain origin may be a feminine form of Man, or derived from the Irish Gaelic word for 'child'.
Substantia nigra is Latin for black substance, reflecting the fact that parts of the substantia nigra appear darker than neighboring areas due to high levels of neuromelanin in dopaminergic neurons.It was discovered in 1784 by Felix FÃ©lix-vicq'D, azyr And Samuel thomas Von soemmerring sÃ¶mmerring alluded to this structure. in 1791he most prominent function of the pars compacta is motor control, though the substantia nigra's role in motor control is indirect; electrical stimulation of the substantia nigra does not result in movement, due to mediation of the striatum in the nigral influence of movement.
From Wikipedia, the free encyclopedia. The spinoreticular tract is an ascending pathway in the white matter of the spinal cord, positioned closely to the lateral spinothalamic tract.The tract is from spinal cordâto reticular formation â to thalamus.he spinoreticular tract utilizes four levels of neurons, unlike most ascending tracts which have first-through third-order neurons. The tract begins with first-order neurons, which immediately synapse with second-order neurons in the posterior horn of the spinal column.