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Stack #73687

Sensory and motor tracts

QuestionAnswer
descending tracts motor (efferent) tracts
where efferent fibers originate from? from motor nuclei (cranial nerves) or anterior horn cells spinal nerves?
ascending tracts sensory (afferent) tracts
where afferent fibers ariginate from? in cells outside of brainstem or spinal cord with sensory ganglia ( cranial nerves) or dorsal root ganglia (spinal nerves)
corticospinal tracts M voluntary muscle control
Vestibulospinal tracts M control mm tone, antigravity mm, and postural reflexes
Rubrospinal tracts: M muscular coordination and posture control
Reticulospinal system m: modifies transmition of sensation (pain), spinal reflexes, muscle tone and activity of sweat glands
tectospinal tract: assists in head turning responses in respons to visual stimuli
Dorsal columns/medial lemniscus discriminative touch, stereognosis, tactile pressure, barognosis, graphestesia, recognition of texture, 2 point discrimination, proprioception, and vibration
Dorsal columns are divided: UE - fasciculus cuneatus and LE - fascilicus gracilis
Anterior spinothalamic tract (ventral) crudely localized touch and pressure
lateral spinothalamic tract: pain and temperature
Spinoreticular tract: chronic deep pain
spinocerebellar tract: convey proprioception information from mm spindle and Golgi tendon organs, nessecery for coordination of movements
What tracs are also called piramidal corticospinal tracts
what tracts are called extrapiramidal? reticulospinal and rubrospinal tracts, and tectospinal tracts
Created by: kasia1