Wk9 FAQs Flashcards
In general terms, how are relative lengths of pre-ganglionic and post ganglionic neurones of the sympathetic nervous system compare to those of the parasympathetic nervous system?
Pre-ganglionic : sympathetic are shorter
Post-ganglionic : parasympathetic are shorter
how is Sympathetic outflow from the spinal cord to effector organs is organised
- Synapse some ganglion
- Travels up or down sympathetic trunk
- Pass through sympathetic trunk and have ganglia elsewhere
What are the pre-vertebral ganglia of the sympathetic system?
Coeliac
Superior meseteric
Inferior mesenteric
Pre-ganglionic neurone
CNS
Nuclei
Post-ganglionic neurone
PNS
Ganglia
Thoracic lumbar outflow
T1-L2
Sympathetic
Cranial sacral outflow
Parasympathetic
Ventral root
—> white ramus communicans
- > grey ramus communicans
- > up or down the sympathetic trunk
- > pass through trunk and synapse elsewhere
Parasympathetic
3, 4, 9, 10
CNS form ganglion near effectors
Sacral —> pelvic splanchic nerves —> bladder, uterus, penis
What does splanchnic mean?
Visceral
what is the sympathetic trunk?
- begins in neck
- 2 trunks that fuse at sacral level and common ganglia - ganglionic impa
- 3 cervical, 12 thoracic, 5 lumbar, 1 sacral, 1 common
- 3rd cervical + 1st thoracic ganglia fused = stellate ganglion - between C7 and 1st rib
Vasomotor
Blood vessels
Pseudomotor
Sweat glands
