Week 3 Lab Flashcards
1
Q
What are the two main motor pathways in the central nervous system?
A
pyramidal and extra-pyramidal
2
Q
What is the pyramidal system used for?
A
conscious motor control
3
Q
What is the extra-pyramidal system used for?
A
involuntary and automatic control such as balance, posture, and muscle tone
4
Q
The pyramidal system consists of what tracts?
A
corticospinal, corticobulbar, corticopontine, and corticosteroid-rubro-olivary
5
Q
What is the corticobulbar tract responsible for?
A
motor control related to cranial nerves
6
Q
What are the corticopontine and cortico-rubro-olivary tracts a part of?
A
feedback circuit between the motor cortex and the cerebellum
7
Q
Where does the corticospinal pathway begin?
A
primarily in the precentral gyrus (primary motor cortex)
