Tracts

Question 1

what tracts take place in the brainstem?

Answer 1

the vestibulospinal tract and reticulospinal tract

Question 2

what 3 tracts take place in the ventromedial tract? what is there function?

Answer 2

1. vestibulospinal tract
2. reticulospinal tract
3. tectospinal tract
   - postural at axial muscles, limb girdle and proximal limbs

Question 3

what two things should we know about the vestibulospinal tract?

Answer 3

• stimulates extensors

- inhibits flexors

Question 4

two things to know about the reticulospinal tract

Answer 4

• stimulates flexors

- inhibits extensors

Question 5

what two things should we know about the tectospinal tract?

Answer 5

• startle reflex

- muscles of head head and trunk

Question 6

what two tracts take place in the midbrain?

Answer 6

tectospinal tract and rubrospinal tract

Question 7

what two tracts comprise the dorsolateral tract? what are their function?

Answer 7

the rubropsinal tract and corticospinal tract

- distal limbs and voluntary movement

Question 8

what two things should we know about the rubrospinal tract?

Answer 8

• forelimb muscles

- comes from red nucleus

Question 9

corticospinal tract: 3 things

Answer 9

• distal muscles of both limbs
• fine motor control
• collateral to red nucleus and brainstem

Question 10

which 3 tracts take place in the cerebral cortex?

Answer 10

• corticospinal tract, corticopontine projection and corticobulbar projection

Question 11

which two tracts are in the crus cerebri?

Answer 11

the corticopontine projection and the corticobulbar projection

Question 12

two things to know about the corticopontine projection

Answer 12

• influence cerebellum

- cortex –> pons –> cerebrocerebellum

Question 13

two things to know about the corticobulbar projection

Answer 13

• influence cranial nerve motor nuclei via reticular formation
• cortex –> reticular formation