Sympathetic vs Parasympathetic Flashcards Preview

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Flashcards in Sympathetic vs Parasympathetic Deck (8)
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1
Q

What is the function of the sympathetic (thoracolumbar) and parasympathetic (craniosacral) nervous systems?

A

fight or flight!
homeostasis
complement each other

2
Q

Where are the preganglionic somas located??

A

Sympathetic
thoracic T1-T12 (C8) and super lumbar L1-L3

Parasympathetic
brainstem and sacral spinal cord

3
Q

Where are the postganglionic somas located?

A
sympathetic
paravertebral ganglia (lateral to spinal cord) and prevertebral ganglia (abdominal cavity)

parasympathetics
near or in walls of target organs ^o^

4
Q

What is the length of the preganglionic and postganglionic fibers?

A

sympathetic
short arm, long fingers [synapse super fast]

parasympathetic
long arms, short fingers [synapse near the organ]

5
Q

What is the nt used at the preganglionic fiber?

A

Ach!!!

6
Q

What is the postganglionic receptor agonist?

A

for both: nicotinic (fast, ionotropic)

7
Q

What is the nt used at the postganglionic fiber?

A

sympathetic
NE and Epi (80% from adrenal medulla)
except!! sweat glands use Ach o.o

parasympathetic
Ach

8
Q

Receptor type?

A

sympathetic
adrenergic (slow, metabotropic)

parasympathetic
muscarinic (slow, metabrotopic)

*both slow for better control!