ASCENDING TRACTS

Question 1

What are the types of the tracts found in the spinal cord?

Answer 1

1.Ascending -carry sensory info to the CNS
2.Descending -carry motor info from the CNS
3.Intersegmental tracts-related to intersegmental reflex

Question 2

What are the two categories of sensations of the ascending sensory pathways?

Answer 2

1.Conscious-referred to the cerebral cortex
2.Unconscious-referred to cerebellum

Question 3

What are two ways of grouping conscious sensations?

Answer 3

1.Exteroceptive-to do with the external environment (detected by somatic receptors and telereceptors)
2.Proprioceptive -from within the body

Question 4

Describe how ascending tracts are grouped?

Answer 4

1.Tracts of the posterior funiculus
2.Tracts of the lateral funiculus
3.Tracts if the anterior funiculus

Question 5

Example of tracts of posterior funiculus?

Answer 5

1.Fasculus Gracilis
2.Fasculus Cuneatus

Question 6

What sensory modalities are carried by tracts of the posterior funiculus?

Answer 6

Sensory modalities of :
1.Proprioception
2.vibration
3.Fine touch
4.Two point discrimination
5.Pressure

Question 7

Describe the dorsal-column medial leminscus pathway?

Answer 7

REFER TO HANDOUT

Question 8

Examples of tracts of the lateral funiculus?

Answer 8

1.Lateral spinothalamic tract
2.Anterior spinocerebellar tract
3.Posterior spinocerebellar tract

Question 9

Where is the lateral spinothalamic tract located?

Answer 9

Medial to the anterior spinocerebellar tract

Question 10

What sensory modalities does the lateral spinothalamic tract carry?

Answer 10

1.pain
2.Temperature-thermal sense

Question 11

Describe the pathway of the lateral spinothalamic tracts.

Answer 11

REFER TO HANDOUT

Question 12

Where is the posterior spinocerebellar tract located?

Answer 12

Lateral to the lateral corticospinal tract

Question 13

Which tract carries the largest fibers in the CNS?

Answer 13

Poster spinocerebellar tract

Question 14

Diameter of the posterior spinocerebellar tract?

Answer 14

20um

Question 15

Describe the pathway of the posterior spinocerebellar tract?

Answer 15

Refer to handout

Question 16

Where is the anterior spinocerebellar tract located?

Answer 16

Lateral to the lateral spinothalamic tract

Question 17

Pathway of anterior spinocerebellar tract

Question 18

Where is the anterior spinothalamic tract located?
It’s sensory modulaties

Answer 18

Medial to the emergence of the ventral root.
Light touch
Pressure

Question 19

Pathway for anterior spinothalamic tract.

Answer 19

REFER TO HANDOUT