Divisions of the ANS - Parasympathetic - Sympathetic

3 important questions on Divisions of the ANS - Parasympathetic - Sympathetic

Fibres originating from where form splanchnic nerves?
Which ganglia do these fibers synapse on?

Fibers from T5 - L2
collateral ganglia

What is the functional purpose of rami communicates in the context of SANS?

allow preganglionic sympathetic signals from anteriolateral grey horn to enter the sympathetic trunk where these signals can move up and down the sympathetic truck ganglion chain and can synapse in these post ganglionic ganglia

In which region of the grey horn are cell bodies of preganglionic sympathetic neurons located?

lateral grey horns of the spinal cord

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