Sympathetic Nervous System

Question 1

When is the sympathetic nervous system activated?

Answer 1

“Fight to flight” response
So, in response to danger or stress
(think S = SCARE!!)

Question 2

Where is the outflow of the SNS from the CNS?

Where are the SNS ganglia located?

Answer 2

Thoraco-lumbar outflow

Bilaterally along the sides of the spinal cord

Question 3

Using the diagram, identify each of the following stages of the nerve pathway:
1. Pre-ganglionic cell body in grey matter of spinal cord
2. Short pre-ganglionic nerve fibres
3. Point of synapse (with many post-ganglionic fibres)
4. In a number of ganglia (on either side of the spinal cord)

Answer 3

Question 4

Fill in the missing blanks:

Answer 4

Question 5

Fill in the blanks:
Pre-G fibres are ____ in length
Post-G fibres are ____ in length

Answer 5

Pre-G fibres are Short in length
Post-G fibres are Long in length