Tracts
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Fasciculus cuneatus (Posterior or dorsal column) | Ascending. Sensory tract for trunk, neck, and UE. Proprioception, vibration, 2 pt discrimination, and graphesthesia
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| Fasciculus gracilis (posterior or dorsal column) | Ascending. Sensory. Trunk and LE proprioception, 2 pt discrim, vibration, and graphesthesia
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| Spinocerebellar tract (dorsal) | Ascending. Sensory. Ipsilateral subconcious proprioception, tension in muscles, joint sense, and posture of the trunk and lower extremities
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| 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.
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| Spino-olivary tract | Ascending. Cutaneous and proprioceptive organs.
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| Spinoreticular tract (the afferent pathway for the reticular formation) | Ascending. Levels of conciousness.
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| Spinotectal tract | Ascending.
Ascending. Sensory. Spinovisual reflexes and assists with movement of eyes and head towards a stimulus
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| Spinothalamic tract (anterior) | Ascending. Sensory tract. Light touch and pressure
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| Spinothalamic tract (lateral) | Ascending. Sensory. Pain and temperature.
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| Corticospinal tract (anterior) (Pyramidal motor tract) | Descending. Ipsilateral voluntary, discrete, and skilled movements.
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| Corticospinal tract (lateral) (Pyramidal motor tract) | Descending. Contralateral voluntary fine movement.
(Damage= positive Babinski sign)
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| Reticulospinal tract (Extrapyramidal motor tract) | Descending. Facilitation or inhibition of voluntary and reflex activity through influence on alpha and gamma motor neurons
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| Rubrospinal tract (Extrapyramidal motor tract) | Descending. Motor input of gross postural tone, fascilitating activity of flexor muscles, and inhibiting the activity of extensor muscles
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| Tectospinal tract (Extrapyramidal motor tract) | Descending. Contralateral postural muscle tone associated with auditory/visual stimuli
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| 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)
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Created by:
smit4163
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