L3 tracts

Question 1

what are tracts?

Answer 1

organised nerve fibres that share common origins, terminations and functions which run between the spinal cord and brain

Question 2

what information do dorsal white columns transmit?

Answer 2

fine discriminative touch
stereognosis
vibration
conscious proprioception

Question 3

fasciculus gracillis

Answer 3

medial gray matter part

Question 4

fasciculus cuneatus

Answer 4

lateral gray matter part

Question 5

fasciculi

Answer 5

small bundles

Question 6

funiculi

Answer 6

slender rope

Question 7

funiculi in spinal cord

Answer 7

anterior funiculus
lateral funiculus
posterior funiculus

Question 8

ascending fibre tracts

Answer 8

(sensory/aff)- carry impulses from pain, thermal, tactile, muscle and joint receptors to the brain. and within Spc

Question 9

descending tracts

Answer 9

(eff/motor)- Originate from the cerebral cortex and brain stem.Carry impulses controlling movement, muscle tone, spinal reflexes, spinal autonomic functions and modulate sensory transmission

Question 10

where r the dorsal white columns

Answer 10

posterior funiculi

Question 11

the three C’s

Answer 11

cortex
conscious
contralateral

Question 12

a fine medulla

Answer 12

fine controlled movements if tract decussate at medulla

dorsal white columns decussate at medulla for fine discriminative touch