DESCENDING PATHWAYS

Question 1

Function of the corticospinal tracts?

Answer 1

Voluntary,discrete,skilled movements

Question 2

What do lesions if the corticospinal tract result in?

Answer 2

1.Babinski sign(extensor plantar)
2.Superficial abdominal reflex loss
3.Loss of fine skilled voluntary movements

Question 3

What are the motor signals carried by the tectospinal tract responsible for?

Answer 3

It mediates reflex postural movements in response to visual and auditory stimuli

Question 4

What is the function of vestibulospinal tract fibers?

Answer 4

Controls extensor muscles

Question 5

Function of the rubrospinal tract fibers?

Answer 5

Control flexor muscles

Question 6

Function of reticulospinal tract?

Answer 6

1.Facilitates it inhibits voluntary movements
2.Has effects on respiration
3.Has effects on circulatory system
4.Influences muscle tone
5.Facilitates or inhibits transmission of sensory impulses