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What is the difference between ascending tracts and descending tracts of the spinal cord?
ascending carry sensory information toward the brain.descending convey motor command to the spinal cord.
What are the neurons that conduct the nerve impulses from the spinal cord and the brainstem to the thalamus called?
afferent nerves of the ascending spinal pathways.
How does the spinal cord works?
The spinal cord transmits messages between the body and brain through nerve pathways.
Where does motor impulse travel through spinal cord?
ascending tracts
Which of the following is not an ascending spinal cord nerve fiber tract?
reticulospinal
What are sensory pathways that are located in the spinal cord or brain referred to?
Nerves
What are intersegmental tracts?
They are short ascending and descending fibres which connect the various segments together to integrate their activities. They include:Fasciculi propriiseptomarginal and coma-shaped tractsAnterior intersegmental tractLissauer tract
In the spinal cord white matter is separated into ascending and descending tracts organized as?
columns
Do Second-order neurons of ascending sensory pathways always decussate.?
No! Only neurons of the specific (lemniscal) & non-specific (anterolateral) pathways decussate and sensation is therfore interpreted in the opposite cerebral hemisphere.Spinocerebellar ascending pathways transmit proprioceptive sensory stimuli to the same side of the cerebellum.
What two tracts do the spinal cord have?
ascending (sensory/afferent) and descending (efferent/motor) tracts.Addition: Other than these two types of tracts, the white matter of spinal cord also contains "associative tracts" containing short ascending and descending fibres which coordinate the function of the different regions of spinal cord.
What are the two pathways by which messages are transmitted?
1 sensory organ - sensory nerves - spinal cord - brain 2 brain - motor nerves - spinal cord - muscles
Which of the following does NOT describe the spinal cord tracts pathways?
memory. it does have relay, somatotype and decussation
