Dorsal Column Tracts And Short Ascending Tracts

Question 1

Describe position, lamination and termination of dorsal column tracts

Answer 1

P, occupy posterior white column, the gracile tract medially in all segments amd the cuneaute tract lateral to oit above T6
L, coccygeal and sacral medially while cervical is most lateral
T, end on Gracile and Cuneate nuclei in medulla

Question 2

Collateral fibers from gracile tract form …., while tgose from cuneate tract form ….

Answer 2

Septo-marginal tract
Comma-shaped tract

Question 3

Some cervical fibers of dorsal tracts end on …., whose axons pass to ….., forming …..tract.

Answer 3

Accessory cuneate nucleus
Cerebellum
Cuneocerebellar

Question 4

The 2nd order neuron of dorsal tract ascends in brain stem as …….

Answer 4

Medial lemniscus

Question 5

The tract of unconscious proprioception from lower limbs and trunk is …., which relays on …..

Answer 5

Posterior spinocerebellar tract
Clarke’s nucleus

Question 6

The tract of unconscious proprioception from lower limbs is…..and relays on …..

Answer 6

Anterior spinocerebellar tract
Lamina V-VII

Question 7

The tract of unconscious proprioception from upper and lower limbs is ……

Answer 7

Spino-olivary tract

Question 8

All tracts of unconsious proprioception enter cerebellum via …. except …..which enter via ….

Answer 8

Inferior cerebellar peduncles
Anterior spinocerebellar tract
Superior cerebellar peduncles

Question 9

Name the tract of proprioception that does NOT decussate throughout its course.

Answer 9

Posterior spinocerebellar tract