S3: Pyramidal system Flashcards Preview

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Flashcards in S3: Pyramidal system Deck (11)
1

The cortico-bulbar tract descends through the brainstem and controls neurons of 

all of the cranial nerve nuclei

2

corticobulbar tract controls cranial nerve nuceli on which side of the body

Cortical control over the Cranial N. nuclei is predominantly bilateral

Control to the Hypoglossal Nucleus is predominantly contralateral

Control to the Facial Nucleus is… BOTH…

3

The cortico-pontine tract descends to terminate on the _____

pontine nuclei in the basis of the pons. 

4

Axons from the corticopontine  nuclei forward the signals to the cerebellum on the ___ side.

side

5

what is the course of the cortico-rubro-olivary circuit)

cortex --> red nucleus ---> inferior olive ---> cerebellum

6

what does the corticospinal tract control?

motor neurons of the trunk and limbs

7

In the brainstem lateral corticospinal axons descend on the same side as their cortical origin until the

pyradmial decussation in the caudal medulla

8

which corticospinal tract continues ipsilaterally?

anterior corticospinal tract (only 15%)

9

brainstem-spinal pathways collectively control

themuscles of the neck, trunk, and limbs

10

damage to a Brainstem-spinal pathways at the level of the medulla wiill cause

problems with movement on the opposite side of the body

11

damage to a Brainstem-spinal pathways at the level of the spinal caord wiill cause

problems with mvoement on the same side of the body