Dorsal column Tract

Question 1

بسم الله الرحمن الرحيم وبه نستعين
“ يومئذ يوفيهم الله دينهم الحق ويعلمون أن الله هو الحق المبين “
Sensory pathways

Answer 1

Anterolateral system
for pain temperature crude touch

Dorsal Column Tracts For
Deep propriception + Fine Touch

Question 2

Dorsal Column tract = ?

Answer 2

Gracile + Cunate Tracts

Question 3

Superior cerbellar peduncle
Middle cerebellar peduncle
Inferioir Cerbellar Peduncle

Answer 3

Midbrain
Pons
Medulla Oblongata

Question 4

Lamination of dorsal column tracts is reversed against the Anterolatral system ?

Answer 4

As Sacral Fibers are medial but Cervical Lateral

Question 5

First order neruon of Dorsal clumn Tract describe it

Answer 5

Dorsal root ganglion psudounipolar neuron
perihperal part take snsation from deep receptors in Muscles and tendons and joints passing through the central process to dorsal column tract in dorsal horn there are two tracts? depending on the level of first order neuron if
Above T6 Through (Lateral) Cunate tract as U.L to cinate nucleus in medulla
Below T6 through (Medial )Gracile Tract as L.L to gracile nucleus in medulla
both reach medulla ending in corrsponding Nuclei

Question 6

Collateral of Gracile ?

Answer 6

SeptoMarginal tract

Question 7

Collateral Of Cunate ?

Answer 7

Coma shaped tract

Question 8

Stretch reflex depedns in which tracts?

Answer 8

Collateral of Gracile – septomarginal
Collateral of Cunate– coma shaped

Question 9

2nd order neuron of drosal column tract ,, Describe

Answer 9

After both gracile and cunate ends at coressponding nuclei gracile and cunate neulei
The 2nd oreder neuron beign from nuclei ducssating called
Sensory Decussation OR Internal Arcuate Fibers then asends as Medial Leminscus in brainstem to the Thalamus IN vpln

Question 10

Another path for cunate tracts is there?>

Answer 10

Yes may ends in Acessory Cunate Nucleus Posterior to cunate one
Giving CuneoCerbellar fibers to Cerebellum

Question 11

Third neuron of Dorsal columhn Tract?

Answer 11

From VPLN Of thalamus passing the posterior limb of internal Capsule then giving corona radiata to Sensory cortex + Superior parital lobule area 5,7 for sterognosis

Question 12

الحمدلله الذي أنزل السكينة علي قلوب العباد فأصلحوا في البلاد

Answer 12

توكلنا علي الحي الذي لايموت سبحانه وتعالي عما يصفون علوا كبيرا !

Question 13

DORSAL COULN TRACT FUNCTION

Answer 13

TV PROP DS
Fine touch
Vibration
Proprioception
Deep pressure
Sterognosis