GENERAL HISTOLOGY

NERVOUS SYSTEM SPECIAL SENSE

CEREBELLUM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
unconscious proprioception from upper limb is carried by
A
Lateral spinocerebellar tract
B
cuneocerebellar tract
C
Posterior column
D
olivocerebellar tract
Explanation: 

Detailed explanation-1: -The cuneocerebellar tract carries unconscious proprioceptive information to the cerebellum from the upper extremity, that is, from those musculoskeletal structures innervated by segments rostral to, and including, T1.

Detailed explanation-2: -The cuneocerebellar (spinocuneocerebellar) tract is the forelimb homolog of the dorsal spinocerebellar tract. It carries proprioceptive and exteroceptive information from the forelimb, and associated neck and upper trunk regions to the cerebellum.

Detailed explanation-3: -Conscious proprioception is relayed mostly by the dorsal column and in part by the spinocervical tract.

Detailed explanation-4: -CUNEOCEREBELLAR TRACT and directly ascends the spinal cord to the lateral cuneate nucleus (aka accessory cuneate nucleus), then enters the cerebellum via the ipsilateral inferior cerebellar peduncle .

Detailed explanation-5: -Spinocerebellar tracts (anterior and posterior divisions) conduct unconscious stimuli for proprioception in joints and muscles. Cuneocerebellar carries the same information as the spinocerebellar tracts.

There is 1 question to complete.