L19: Overview Of Central Sensory And Motor Systems

Question 1

What is the anatomical classification of the nervous system

Answer 1

CNS

PNS

Question 2

What is the functional classification of the central nervous system

Answer 2

Somatic NS

Autonomic NS

Question 3

What are the 3 somatic afferent subtypes

Answer 3

Latospinal thalamic tract
Dorsal column
Dorsal spinal cerebella tract

Question 4

What are the 2 somatic efferent subtypes

Answer 4

Pyramidal

Extrapyramidal

Question 5

What is the cerebral cortex divisible into

Answer 5

Sensory and motor brain

Question 6

What is the motor and sensory brain seperated by

Answer 6

Central sulcus

Question 7

What is a sulcus

Answer 7

A depression in the brain

Question 8

Where does sensory info occur at the cerebral cortex

Answer 8

Post- central gyrus

Question 9

What takes the sensory information from the spinal cord to brain

Answer 9

Sensory fibres

Question 10

According to the sensory information being carried from the spinal cord to the brain what does the sensory fibres have

Answer 10

Subtypes

Question 11

What are the sensory fibres

Answer 11

Dorsal column
Spinothalamic tract
Dorsal cerebellar tract

Question 12

What are the 2 categories of sensations

Answer 12

Conscious sensation

Non-conscious sensation

Question 13

What does the conscious sensation involve

Answer 13

Pain
Temp
Crude touch

Question 14

What does non conscious sensation involve

Answer 14

Tactile sensation 
Pain 
Joint position 
Muscle length
Tension

Question 15

What happens to the primary sensory neurone when it reaches the spinal cord

Answer 15

Terminate into the dorsal horn by either its:
Respective segment
Above spinal segment
Below spinal segment

Question 16

Where does the second order sensory neurone pick up a signal from the first neurone

Answer 16

Before crossing the midline on the spinal cord

Question 17

Where does the second order sensory neurone ascend to and how

Answer 17

To the opposite side and to the medulla oblongata then thalamus

Question 18

Where does the third order sensory neurone pick up sensory information from the second order sensory neurone

Answer 18

In the thalamus

Question 19

Where does the third order sensory neurone ascend to and terminate at

Answer 19

Ascends and terminates at the post-central gyrus

Question 20

For pain and temperature what tract carries it

Answer 20

Spinothalamic tract

Question 21

What carries propioceptive information

Answer 21

Dorsal column

Question 22

What happens when sensory neurones arrive into the post central gyrus

Answer 22

They terminate into the respectable areas mapping the origin of site of body

Question 23

What is syringomyelia

Answer 23

A condition when the spinal canal with fluid forms a cyst

Question 24

What can the cyst in the spinal canal cause

Answer 24

A cut out in all sensation from the pain system

Question 25

Where can the cyst expand to

Answer 25

Ventral horn or all over the spinal cord

Question 26

What is the role of the pre-central gyrus

Answer 26

Issues motor commands to the muscle

Question 27

What are the 2 descending systems

Answer 27

Pyramidal

Extra pyramidal

Question 28

How does the extrapyramidal system descend

Answer 28

From:
Cerebral cortex 
To:
Thalamus 
Basal ganglia 
Spinal Cord

Question 29

How does the pyramidal system descend

Answer 29

From cerebral cortex to spinal cord