Autonomic Nervous System

Question 1

The Autonomic Nervous System includes? Function? Using?

Answer 1

Efferent by convention, also includes the Afferent system;

to control organs; using reflex arcs

Question 2

The point of a reflex is to?

Answer 2

Keep constant state

Question 3

Parasympathetic vs. Sympathetic is determined by ___________; gimme the good details bro?

Answer 3

Origin: T1- L2 - Sympathetic (SL)
Origin: Brainstem - S3 - Parasympathetic (LS)

Question 4

What receptor is released by the pre-post synaptic cleft? Parasympathetic/Sympathetic; Name Receptors at P-P synaptic cleft.

Answer 4

Nicotinic Receptor–> Muscurinic Receptor (Ach Rec)
S:
NE (secreted by post ganglionic fibers) - B1 Adrenergic
E - (secreted by the adrenal medulla+ NE)
Ach - (secreted by nerves innervating, sweat glands) and blood vessels

Question 5

The Sympathetic nervous system innervates the ________ causing release of _____ and ______ into the blood stream. _________ is a hormone

Answer 5

Adrenal Medulla, Epinephrine, Nor-epinepherine, Neurotransmitter secreted in to the blood stream

Question 6

Explain Divergence/Convergence of (Pre & Post Ganglionic Fibers). What does this allow for?

Answer 6

D: One pre-G diverges linking with many. post G
C: Many pre-G converge linking to post G

Global Response!

Question 7

What are the three options a Pre-Ganglionic GVE (sym/psym) has once leaving its origin

Answer 7

1) Synapse w/ post-G at (same, upper lower) levels (through white ramus)
2) Bypass Sympathetic chain become part of spinal nerve affect synapse elsewhere (Pre. G are longer - exceptions)

Question 8

Gimme Percent Composition of a Spinal Nerve? Neurotransmitter released? What is the receptor type? Innervation?

Answer 8

8% Autonomic Nerves; 92% somatic
BV, hair follicles, and sweat glands (Ach - Muscarinic receptors *think running w/skeletal muscle so their is benefit in having same NT type)

Question 9

What are a couple thing the autonomic nervous system controls?

Answer 9

vegetative metabolic state: HR, peripheral resistance, behavior (response feeling)

Question 10

Receptor Depolarization (stimulus –> AP)

Answer 10

tonic - lasting
phasic - rhythmic
mixed

Question 11

Think Baroreceptor Example: The Parasympathetic system reflex inhibits the ____________

Answer 11

Sympathetic Nervous System

Question 12

Remember Baroreceptor Graph (Rate of fire vs. Pressure)

for one graph and then for two graphs

Answer 12

Remember that when pressure increases more fibers are recruited and more AP

Single Fiber: straight line, then you have a parabolic incr.
Multiple Fibers: Sigmoidal *

*note: graphs sigmoidal because of differences.