ANS Flashcards
The sympathetic nervous system originates at
Spinal Cord T1-L2
The parasympathetic nervous system originates at
CN 3,7,9,10 and S2-S4
The thoracic sympathetic chain cervical ganglia are separated into:
superior, middle and inferior
The preganglionic sympathetic supply to the thoracic viscera are from
T1-T5
The postganglionic supply to the thoracic viscera are from the
Superior, middle and inferior cervical ganglia
T1-T5 paravertebral ganglia
The thoracic sympathetic nerves exit as
direct fibers and travel downwards to enter the thorax as cardiopulmonary splanchnic nerves (coronary artery dilation, Increase HR and bronchodilation)
Abdominal splanchnic nerves are composed of (2) ___ supplying _____ and synapse in____
preganglionic and visceral sensory fibers
Abdominal viscera
Prevertebral ganglia
Greater splanchnic nerves include____
T5-T9
Greater splanchnic nerves synapse in
celiac ganglion including liver and gallbladder
Lesser splanchnic nerves include
T10-T11
Lesser splanchnic nerves synapse in
superior mesenteric ganglion
Least splanchnic nerves include
T12
Least splanchnic nerves synapse in
Aorticorenal ganglia
Vagus nerve is a (parasympathetic/sympathetic) nerve supplying to
parasympathetic
thoracic/abdominal viscera
Vagus nerve travels
Parallel to esophagus. splits into left anteriorly and right posteriorly
Preganglionic fibers are (myelinated/unmyelinated) and utilizes?
myelinated
actecylcholine
Postganglionic fibers are (myelinated/unmyelinated) and utilizes?
Unmyelinated
Norepinephrine
Preganglionic neuron properties
(myelinated/unmyelinated)
(What neurotransmitter?)
(Where synapses)
Myelinated
Uses acetycholine
Synapses with postganglionic neruon
Post-ganglionic neuron properties
(myelinated/unmyelinated)
(What neurotransmitter?)
(Where synapses)
unmyelinated
Uses norepinephrine
Originates from ganglion
Stellate ganglion also known as
12 thoracic ganglia pairs
First thoracic ganglia pairs fused with
cervical ganglion
