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NPTE Neuro 3

Tracts

TractFunction
Fasciculus cuneatus (Posterior or dorsal column) Ascending. Sensory tract for trunk, neck, and UE. Proprioception, vibration, 2 pt discrimination, and graphesthesia
Fasciculus gracilis (posterior or dorsal column) Ascending. Sensory. Trunk and LE proprioception, 2 pt discrim, vibration, and graphesthesia
Spinocerebellar tract (dorsal) Ascending. Sensory. Ipsilateral subconcious proprioception, tension in muscles, joint sense, and posture of the trunk and lower extremities
Spinocerebellar tract (ventral) Ascending. Sensory. Ipsilateral subconcious proprioception, tension in muscles, joint sense, and posture of the trunk and LEs. Some fibers crossing with subsequent recrossing at the level of the pons.
Spino-olivary tract Ascending. Cutaneous and proprioceptive organs.
Spinoreticular tract (the afferent pathway for the reticular formation) Ascending. Levels of conciousness.
Spinotectal tract Ascending. Ascending. Sensory. Spinovisual reflexes and assists with movement of eyes and head towards a stimulus
Spinothalamic tract (anterior) Ascending. Sensory tract. Light touch and pressure
Spinothalamic tract (lateral) Ascending. Sensory. Pain and temperature.
Corticospinal tract (anterior) (Pyramidal motor tract) Descending. Ipsilateral voluntary, discrete, and skilled movements.
Corticospinal tract (lateral) (Pyramidal motor tract) Descending. Contralateral voluntary fine movement. (Damage= positive Babinski sign)
Reticulospinal tract (Extrapyramidal motor tract) Descending. Facilitation or inhibition of voluntary and reflex activity through influence on alpha and gamma motor neurons
Rubrospinal tract (Extrapyramidal motor tract) Descending. Motor input of gross postural tone, fascilitating activity of flexor muscles, and inhibiting the activity of extensor muscles
Tectospinal tract (Extrapyramidal motor tract) Descending. Contralateral postural muscle tone associated with auditory/visual stimuli
Vestibulospinal tract (Extrapyramidal motor tract) Descending. Ipsilateral gross postural adjustments subsequent to head movements, facilitating activity of extensor muscles and inhibiting activity of flexor muscles (Damage= paralysis, hypertonicity)
Created by: smit4163