Week 11 - ANS And Pain And Shizzle

Question 1

What are the parasympathetic outflows from the CNS?

Answer 1

Cranio- sacral parasympathetic outflow 1) General Visceral Efferent (CN, 3, 7, 10, ,9) 2) Sacral spinal cord (S2,3,4)

Question 2

What are the components of parasympathetic afferents?

Answer 2

1) Glossopharangeal nerve - CAROTID SINUS AND CAROTID BODIES are important in keeping the CNS Informed about the physiological status of the cardiovascular system and respiratory system

Question 3

What is the sympathetic outflow from the CNS?

Answer 3

1) thoracolumbar sympathetic outflow lateral horn of spinal cord from segments T1 - L2 *** pass through the sympathetic chain with/ without synapsing ***

Question 4

What are the three possible routes for sympathetic preganglionic axons?

Answer 4

1)

Question 5

What are the features of the sympathetic nervous system?

Answer 5

1) Short preganglionic fibres - nicotinic - ACH 2) Long postganglionic fibres - adrenergic - NA, peptides

Question 6

What are varicosities?

Answer 6

1) Swellings at post ganglionic fibres terminal branches 2) neurotransmitter is synthesised here 3) release of neurotransmitter over a large area