Autonomic NS Flashcards
What is another name for sympathetic ns?
Thoracolumbar because it originates from T1-L2
What is another name for Parasympathetic ns?
Craniosacral because it originates from the CN 3,7,9,10, and S2-4
T or F: The autonomic system is both motor and sensory.
False the autonomic system is entirely motor, but depends on sensory input
What do preganglionic neurons release?
AcH, always myelinated
What doe postganglionic neurons relase typically?
Never myelinated, uses Norepi. and Epi.
Where do parasympathetic nerves usually synapse?
On ganglion cells in the walls of target organs
What is the stellate ganglion?
There are twelve pairs of thoracic ganglia and the first one usually fuses with the inferior cervical ganglion
What are the Splanchnic nerves composed of?
Preganglionic fibers and visceral sensory fibers to supply the abdominal viscera.
Describe the Greater splanchinc nerve.
Celiac ganglia is T5-T9 and is prevertebral
The celiac plexus carries sympathetic to gut and also preganglionic fibers of vagus nerve until LEFT COLIC FLEXURE.
The lesser Splanchnic nerve.
Superior mesenteric ganglia has the same function as the vagus nerve, it is prevertebral. T10-T11
Least Splanchnic nerve.
T12, Aorticorenal ganglia, prevertebral sympathetic innervation to the kidneys and suprarenal glands
what nerve is the major parasympathetic supply to the abdominal viscera and thoracic?
CN X (Vagus)
After the vagus nerve pierces the diaphragm with the esophagus, what does it become?
Gastric nerve
How far does the vagus nerve innervate?
Until the left colic flexure
What does the left recurrent laryngeal nerve hook around?
the arc of the aorta to the left of the ligamentum arteriosum
