Lecture11: Ascending Pathways And Somatosensory Cortex

Question 1

Which pathway is responsible for the ability to read braille (Graphesthesia)?

Answer 1

DCML

Question 2

Which pathway is responsible for conscious proprioception?

Answer 2

DCML

Question 3

What do the secondary neurones ascend as?

Answer 3

Medial lemniscus

Question 4

What is the ventrolateral system respond for?

Answer 4

Pain and Temperature

Question 5

In which part of the spinal cord is the ventrolateral system present?

Answer 5

in the ventrolateral part

Question 6

In which parts of the brain does the ventrolateral system relay information?

Answer 6

The hypothalamus and thalamus

Question 7

Which side of the STT Pathway is responsible for Itch, tickle and pressure?

Answer 7

The anterior side (PALEO)

Question 8

Which side of the STT Pathway is responsible for Fast pain?

Answer 8

The Lateral side (NEO)

Question 9

Which pathway mediates slow pain?

Answer 9

Spinoreticular tract

Question 10

What are the spinoreticular tract’s main functions?

Answer 10

To arouse the cortex and stimulate Limbic cortex to the nature of the stimulus

Question 11

Which pathway is associated with visceral pain?

Answer 11

STT pathways Spinoreticular tract

Question 12

What is the function of the Spinotectal tract?

Answer 12

Mediates visuospinal reflexes via the turning of the head or eyes

Question 13

What is the origin of the Spinotectal tract?

Answer 13

The Cervical Spinal Cord

Question 14

Where does the Spinotectal tract end?

Answer 14

The Superior Colliculus

Question 15

Is the Spinotectal Pathway a crossed pathway?

Answer 15

Yes

Question 16

Where does the Spino-Olivary tract ascend to?

Answer 16

the ION in the medulla

Question 17

Is the ION associated with motor learning?

Answer 17

Yes

Question 18

What is the function of the Spino-olivary tract?

Answer 18

Modifys movements in case of encountering an unexpected obstacle

Question 19

What is the function of the SCBT Pathway?

Answer 19

Monitor and modify movements

Question 20

What sensations are conveyed from the SCBT Pathway?

Answer 20

Muscle stretch and joint position and tension tension

Question 21

What type of nerve fibers are conveyed in the SCBT Pathway?

Answer 21

A-alpha fibres

Question 22

Does the SCBT Pathway require continuous feedback on what the muscles are doing?

Answer 22

Yes

Question 23

Where does the SCBT Pathway end?

Answer 23

The Cerebellum

Question 24

Which Pathway is responsible for conscious proprioception?

Answer 24

DCML

Question 25

What does the Conscious proprioception pathway do?

Answer 25

Weight of an object

Question 26

What pathway is responsible for Unconsious proprioception?

Answer 26

SCBT

Question 27

What does the Unconscious pathway do?

Answer 27

The sensation of limb and joint movement, also walking talking and what not

Question 28

In which side of the SÍ cortex does analysis of somatosensory information occur?

Answer 28

Posterior

Question 29

The Primary somatic sensory area 2 is responsible for which tactile features?

Answer 29

Learning and memory

Question 30

Brodmann’s areas 5 and 7 are important for stereogenesis?? (Higher level of interpretation of sensory experiences)

Answer 30

Yes

Question 31

Should brodmanns areas 5 and 7 get damaged, what would happen?

Answer 31

The person would not be able to recognize objects via touch