Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
10 Cards in this Set
- Front
- Back
|
where does the corticospinal tract pass through in the midbrain
|
crus cerebri
|
|
|
where does the corticospinal tract cross
|
85% cross at the pyramidal decussation in caudal medulla
|
|
|
a central cord lesion in cervical spinal cord has the potential to affect ____> ______
|
UE > LE
|
|
|
where does the lateral corticospinal tract run
|
in the lateral columns of the white matter of the cord
|
|
|
what does the corticospinal tract carry
|
fine motor control (not exculsive to distal muscles)
|
|
|
what type of neurons are carried in the corticospinal tract
|
UMN
|
|
|
where does the corticospinal tract run in the medulla
|
in the pyramids
|
|
|
the 15% of the corticospinal tract that did not cross in the medulla descend where
|
IPSI as anterior or ventral corticospinal tract with crossing at the level of the LMN
|
|
|
most of the corticospinal fibers synapse on interneurons in _____ before synapsing on ____ and ____ in ______
|
synapse on interneurons in the intermediate gray, before synapsing on the alpha and gamma LMN in ventral gray
|
|
|
what occurs simultaneously with the synapsing of corticospinal fibers to LMN
|
1) facilitation of agonist
2) reciprocal connections to inhibit antagonist |
