Autonomic Nervous System Flashcards
1
Q
parasympathetic NS
A
rest and digest
2
Q
sympathetic NS
A
fight or flight
3
Q
spinal segments of the sympathetic NS
A
T1-L2
4
Q
spinal segments of the parasympathetic NS
A
cranial nuclei in the brainstem, S2-S4 (inf and sup of the sympathetic NS)
5
Q
autonomic pathways
A
motor signal must travel across 2 neurons to get to target organs
6
Q
preganglionic neuron
A
the first neuron, which has its soma in the brainstem or spinal cord; goes to a ganglion, synapses, and relays info
7
Q
postganglionic neuron
A
the second neuron whose axon extends the rest of the way to the target cell
8
Q
sympathetic branch of the ANS
A
bilaterally symmetrical chain of ganglia (paravertebral ganglion)
