White matter configeration

Question 1

What does the gracilis fascicle carry and where does it project to

Answer 1

• carries fine touch, vibration and conscious proprioception from ipsilateral lower limb (from T6 and bellow)
• Projects to gracilis nucleus

Question 2

What does the cuneatus fasicle carry and where does it project to

Answer 2

• carries fine touch, vibration, conscious proprioception and unconsious proprioceptoon from ipsilateral upper limb/body (above t6)
• projects to cuneatus nucleus

Question 3

What does the anterolateral system carrry (ant+lat spinothalamatic), where does it project to and origin

Answer 3

ant- crude touch CL
lat- pain and temp CL

origin- CL lamina, 1, 3/4, 5/6
project- Thalmus (ventral post lat nucleus)

Question 4

what does Ant/post spinocerebellar carry , projection and what levels does each start

Answer 4

Unconsious proprioception to ipsilateral cerebellum
post- c8-l3 ipsilateral dorsal nuc of clarke
ant- below l3 Cl lamina 7

Question 5

what does lat corticospinal carry, origin and projection

Answer 5

supplies volunatary motor functions of limbs

Origin- CL motor cotex
project- Lamina 9 and lamina 7 of each lvl

Question 6

what does ant corticospinal carry, origin and projection

Answer 6

Supplies voluntary motor function of axial mm

origin- CL motor cortex (cross at ant white commisure)

project- lamina 9

Question 7

What does rubro-spinal tract carry, origin and projection

Answer 7

autonomic motor function, modulation of flexor mm

origin- CL red nucleus
projection- lamina 7,8,9

Question 8

What does vestibulospinal tract carry, origin and projection

Answer 8

controls mm of head + neck for gaze fixation and extensor mm

origin- IL lateral vestibular nucleus

projection- lamina 7,8,9

Question 9

What does medual longitudinal tract carry, origin and projection

Answer 9

controls mm of head + neck for gaze fixation/opposes rubrospinal tract

origin- R + L vestibular nucleus
proj- lamina 7,8,9(med)

Question 10

what does the reticulospinal tract carry (med + lat), origin and projection

Answer 10

autonomic motor function
med–> inhibitory
lat–> facilitators

origin- reticular formation
projects- lamina 7,8,9

Question 11

What does the tectospinal tract carry, origin and proj

Answer 11

directs reflecxive mvmts of head and neck in response to vis and auditory stims

origin- CL sup colliculus

projects- lamina 7,8,9