Deck 2

Question 1

Where does the primary affronts from th slower limb synapse?

Answer 1

on neurons in the dorsal nucleus of Clark (Clarke’s column) Clark’s nucleus
projection axons collect ipsilaterally in a narrow surface zone posterolaterally

Question 2

Where does the DSCT fibers ascend?

Answer 2

Dorsal spinocerebellar fibers from lower limb ascend in the same relative position to the inferior cerebellar peduncle (ICP)

Question 3

Where does the primary afferents for the lower limb of the VSCT end?

Answer 3

Primary afferents from lower limb end along central lateral margin of spinal gray (spinal border cells - lamina VII)

Spinal border cell axons decussate in ventral white commissure and collect in an anterolateral surface zone as ventral spinocerebellar tract (VSCT)

Question 4

Where does the VSCT fibers ascend to?

Answer 4

fibers ascend to the superior cerebellar peduncle

These fibers recross back to the same side of the cerebellum as the side of origin

Question 5

Where does the CCT tract ascend?

Answer 5

ascends ipsilaterally parallel to fasciculus cuneatus fibers in the dorsal column

parallels DSCT to ipsilateral cerebellum

Question 6

How is the rostra spinocerebellar tract organized?

Answer 6

upper limb counterpart to VSCT
originates in lamina VII
ascends ipsilaterally parallel to spinocerebellar tracts
RSCT remains ipsilateral and parallels DSCT and CCT through ICP

Question 7

Which side does the spinocerebellar sensory pathways go?

Answer 7

go to the cerebellum side on the same side as origin of the feedback information.