Spinal Cord and Periphery

Question 1

What is the grey matter of the spinal cord composed of?

Answer 1

Non-myelinated neuronal cell bodies

Question 2

The axons of sensory fibres enter the spinal cord through

Answer 2

the dorsal root into the dorsal horn of grey matter

Question 3

Motor neurone cell bodies are in

Answer 3

the ventral horn

Question 4

Ascending spinal tracts carry

Answer 4

sensory information to the brain

Question 5

How many neurons are there between the peripheral receptor and the cortex in an ascending spinal tract?

Answer 5

3 - first, second and third order neurons

Question 6

What sensations are transmitted by the dorsal column?

Answer 6

Fine touch
Tactile localisation
Vibration sense
Proprioception

Question 7

The lateral spinothalamic tract of the right side of the body is responsible for detecting

Answer 7

pain and temperature from the left side of the body

Question 8

The dorsal column of the right side is responsible for detecting

Answer 8

touch, pressure and proprioception from the right side of the body

Question 9

Are ascending or descending pathways sensory?

Answer 9

Ascending

Question 10

Are ascending or descending pathways motor?

Answer 10

Descending

Question 11

How is the white matter arranged?

Answer 11

As three columns - posterior, lateral and anterior

Question 12

White matter is made up of

Answer 12

tracts

Question 13

What is a dermatome?

Answer 13

The area of skin supplied by a particular spinal nerve

Question 14

What is a myotome?

Answer 14

The group of skeletal muscles innervated by a particular spinal nerve

Question 15

Components of the central nervous system

Answer 15

Brain

Spinal Cord

Question 16

The majority of nerve cell bodies and synaptic connections lie in what part of the nervous system?

Answer 16

The CNS

Question 17

The peripheral nervous system constitutes the link between

Answer 17

the CNS and structures in the peripheral of the body

Question 18

Functions of peripheral nervous system

Answer 18

Receives sensory information from the peripheral, and sends controlling impulses to the periphery

Question 19

The peripheral nervous system consists of

Answer 19

nerves joined to the brain and spinal cord and their ramifications within the body

Question 20

Spinal nerves serving upper or lower limbs coalesce to form

Answer 20

brachial or lumbar plexus

Question 21

Simplest components of a reflex arc

Answer 21

Sensory nerve and a motor nerve with a synapse in between

Question 22

The autonomic nervous system refers to cells within the CNS and PNS involved in

Answer 22

innervation and control of visceral organs, smooth muscles and secretory glands

Question 23

What is the outflow of the sympathetic ANS?

Answer 23

Thoraco-lumbar

Question 24

In the sympathetic ANS, preganglionic fibres have ganglia near

Answer 24

the spinal cord

Question 25

What section of the ANS is involved in the fight or flight impulses?

Answer 25

Sympathetic

Question 26

What is the outflow of the parasympathetic ANS?

Answer 26

Cranio-sacral

Question 27

In the parasympathetic ANS, preganglionic fibres have ganglia near

Answer 27

the target organ

Question 28

Postganglionic fibres of the parasympathetic ANS target

Answer 28

exocrine glands, the heart, other selected organs