Flashcards in Autonomics Deck (51)
Where on the sc do sympathetics originate from?
Where on the sc do parasympathetics originate from?
Mostly CN's of brain stem, some in S2-S4
What CN's give off parasympathetic function (GVE)?
III, VII, IX, X
Once a sympathetic nerve exits its ganglion it becomes part of a ____________ nerve.
Sympathetic cell bodies originate from the _____________ of the sc.
Lateral horn (interomediallateral nucleus, IML).
Name the sympathetic ganglion superior to T1.
Superior, medial, and inferior cervical ganglion.
A sympathetic ganglion outside of the sympathetic trunk is called a __________________.
Sympathetic preganglionic fibers leave the sc via the ________ root.
Sympathetic preganglionic fibers are ________ and ________. Sympathetic postganglionic fibers are ________ and ________.
- short, myelinated (white)
- long, unmyelinated (gray)
Which NS is responsible for vasomotor tone?
Parasympathetic nn. synapse at __________ ganglia. Where are these ganglia located?
- peripheral (ganglia)
- near target organ
Most sympathetic nn. synapse at __________ ganglia. Where are these ganglia located?
- Chain or collateral ganglia (others are the adrenal medullae)
- Located near spinal cord
Parasympathetic preganglionic fibers are ________ and ________. Parasympathetic postganglionic fibers are ________ and ________.
- long, myelinated
- short, unmyelinated
What is the NT for sympathetic preganglionic synapses? Postganglionic synapses?
What is the NT for parasympathetic preganglionic synapses? Postganglionic synapses?
The postganglionic neurons for sphlanchnic nn. synapse at what neuronal structures?
The postganglionic neurons for sphlanchnic nn. T5-T9 are associated w/what ganglion? What is the important n. that comes from here?
- Celiac ganglion
- Greater splanchnic n.
The postganglionic neurons for sphlanchnic nn. T9-T10 are associated w/what ganglion?
Inferior mesenteric ganglion
What is the sympathetic effect of renin secretion in the kidneys?
Are pelvic splanchnic nn. parasymp or symp? What about sacral splanchnics?
- Parasympathetic (they are the exception). "P"
- Sympathetic ("S")
What is unusual about sympathetic splanchnic nn?
Their ganglion are closer to target organ.
What do sympathetic nn. use to find their targets?
Blood vessels and peripheral nn.
What NT increases HR?
What are the 3 key symptoms of cranial sympathetic nerve stimulation?
Sweating on face, dilator pupillae, tarsal m. of eyelid.
What is Horner's syndrome?
What are the 3 signs?
Interruption of the ipsilateral sympathetic pathway (to the face)
- Miosis (excessive pupil contriction)
- Ptosis (eyelid drooping ~30%)
- Anhidrosis (lack of sweating)
- Unilateral facial redness (No symp, no vasoconstriction)
How does parasymp innervation affect the pupil size and lens?
Smaller pupil, rounder lens
Someone w/sign's of Horner's syndrome w/upper extremity pain and smoke tobacco could possibly have _____________.
What are the parasympathetic nuclei of CN's III, VII, IX, and X?
CPOS (COPS almost)
Thoracic, abdominal, and cardiac ganglia (10)
Which parasympathetic nerve helps you pee, poop, and point (your penis)?
Pelvic splanchnic n.