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anatomy 11.2

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anatomy 11.2
Physiology Chooljian

Lecture Exam #3 Review

FIRST: Be sure to: Study chapter objectives, summaries, and reviews
Review your lecture notes

ANS
Define: denervation hypersensitivity, ganglia, mass activation, sympathoadrenal system, dual innervation.
What are the two divisions of the ANS? Where are the neurons for each division located, and what is the major function of each division?
What type of neurons (sensory or motor) are in the ANS? What are the names for the two neurons in the ANS system?
What size fibers make up the preganglionic neurons? The postganglionic neurons? Why is the white ramus white, and the gray ramus gray? What does this mean for speed of conduction?
Know the difference between paravertebral ganglia, collateral (prevertebral) ganglia, and terminal ganglia. Which division uses which?
Which division has long preganglionic fibers? Long postganglionic fibers?
Compare/contrast the autonomic reflex with the somatic reflex. What portions of the CNS modify the autonomic reflex?
What neurotransmitter is used in all preganglionic fibers? What is the receptor in the ganglia?
Why is the adrenal medulla included in the sympathetic nervous system? What does it release, and what effect does that have on the body?
Which three cutaneous effectors receive innervation only from the SNS?
What receptors are used by the SNS? The PSNS?
What cranial nerves carry parasympathetic fibers? Which cranial nerve is the most important for homeostasis?
What is an “en passant” synapse, and how does it differ from a neural synapse?
Know the three types of effects possible with dual innervation. How does the SNS control homeostasis in the organs that it innervates alone?
Know the handout given on the “Summary of the Autonomic Nervous System”. By this, I mean know the transmitters, the receptors (and the mechanism by which they work, e.g., Ca++ as second messenger), and the actions of the SNS and PSNS for each of the organs or

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