Ascending Tracts

Question 1

What does the spinal nerve split into

Answer 1

Anterior and posterior root

Question 2

Which matter is the most myelinated

Answer 2

White

Question 3

Why would it be more useful to send signals to the brain in white matter

Answer 3

It is more myelinated so it is quicker

Question 4

Define ganglion

Answer 4

A collection of nerve cells such as neurons and axons in an area

Question 5

What is the alternative word for posterior column

Answer 5

Medial lemniscal pathway

Question 6

What is two point discrimination

Answer 6

Your ability to discriminate between two points on the skin

Question 7

What does the posterior column split into

Answer 7

Fasciculus gracilis - tract of goll
Fasciculus cuneatus - tract of burdach

Question 8

Which tract in the posterior column is in control of lower limbs

Answer 8

Fasciculus gracilis - tract of goll

Question 9

Which tract in the posterior column is in control of the upper limbs

Answer 9

Fasciculus cuneatus - tract of burdach

Question 10

What does ipsilateral mean

Answer 10

The same side

Question 11

What does contra lateral mean

Answer 11

The different side

Question 12

Which tracts go to the cerebrum

Answer 12

Posterior column
Spinothalamic

Question 13

Which tracts go to the cerebellum

Answer 13

Spinoecerebellar (ant & post)
Cuneocerebellar

Question 14

Which tracts go to the brain stem

Answer 14

Spinoreticular
Spinotectal
Spino - olivary

Question 15

What does the posterior column detect

Answer 15

Fine touch, vibrations and two point discrimination

Question 16

What is responsible for lower limbs and trunk

Answer 16

Fasciculus gracilis

Question 17

What is responsible for upper limbs and trunk

Answer 17

Fasciculus cunneatus

Question 18

What is the lateral spinothalamic tract responsible for

Answer 18

Pain
Temperature

Question 19

Which fibres cause slow pain

Answer 19

C fibres

Question 20

Which fibres cause fast pain

Answer 20

A delta fibres

Question 21

What is the posterolateral tract of lissauer

Question 22

What are the order neurons of the posterior column tract

Answer 22

1 - Fasciculus gracils and cunneatus
2 - nucleus gracilis and cunneatus (medulla oblongata)
3 somatosensory cortex in thalamus

Question 23

What are the order neurons for the lateral spinothalamic tract

Answer 23

1 - dorsal root ganglion / posterolateral tract of lissauer
2 - substantial gelatinosa
3 - ventropposterior lateral nucleus of thalamus

Question 24

Where do axons cross in the lateral spinothalamic tract

Answer 24

Anterior grey and white commissaries within one spinal segment and ascend in lateral white column