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ANATOMY 3300 Study Guide - Midterm Guide: Azygos Vein, Great Vessels, Trabecula

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Ohio State University
Department
Anatomy
Course
ANATOMY 3300
Professor
All

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Document Summary

Unit 5 study guide: sns vs. ans. The autonomic nervous system: effector: skeletal muscle, efferent pathway: one neuron system, neurotransmitter and response of the target organ, acetylcholine, excitatory. Parasympathetic respo(cid:374)si(cid:271)le for routi(cid:374)e (cid:373)ai(cid:374)te(cid:374)a(cid:374)(cid:272)e, (cid:862)rest a(cid:374)d digest(cid:863), i(cid:374)(cid:374)ervates i(cid:374)ter(cid:374)al organs: origin cn iii, vii, ix, x, and s2-s4, relative length of fibers presynaptic long, postsynaptic short, ganglia located in or near visceral organs. Location of cell bodies: preganglionic neurons brain and sacral spinal cord, postganglionic neurons in the ganglia. How signals are sent to innervated structures: cn iii smooth muscle in eye, cn vii lacrimal, submandibular, and sublingual glands, cn ix parotid gland. Unit 5 study guide: cn x heart, lungs, liver, gallbladder, stomach, small intestine, pancreas, and proximal. Intramural ganglion ganglia are in or near the wall of the effector organ: sympathetic division of the ans usually speeds up or stimulates all body functions except digestion.

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Related Questions

1. The autonomicnervous system consists of a _________ neuron chain that branchesinto the periphery. <?xml:namespace prefix = o ns ="urn:schemas-microsoft-com:office:office" />

2. There are twodivisions of the ANS, the parasympathetic and the sympathetic. Theparasympathetic division __________ body energy requirements and ismost active during________________. The sympathetic divisiongenerally enables the body to use stored energy and is activeduring ______________.

3. Compared to thesomatic nervous system, the first neuron in the ANS is ___________myelinated. The second order neuron is generally un____________.

4. The second orderneuron in the chain that innervates the adrenal glands is reallythe release of NE and Epi into the ____________________.

5. The __________nerve is the parasympathetic branch that innervates the heart aswell as a majority of other visceral organs.

6. The first orderneuron in the ANS chain almost always releases ________________into the synapse. The NTs released from the second order neurons ofthe sympathetic division are usually ________________ and___________________, while the second order neuron of the PNSusually releases _____________________.

7. Theparasympathetic division is sometimes called the _______________division because of the location from which the nerves arise.

8. The sympatheticdivision is sometimes called the _______________ division becauseof the location from which the nerves arise.

9. Which nervecarries about 90% of all parasympathetic traffic?

10. Most tissues/organs arecontinuously innervated by the ANS, that is, they have ____________tone.

11. The ANS regulatesunconscious processes that maintain _____________________, a termcoined by Walter Canon.

12. List and understand thethree different routes for preganglionic neurons in the sympatheticbranch.

13. Compare and contrast theneuronal divergence (pre- to postganglionic neurons) of the PNS andthe SNS. What does this mean? How does the adrenal gland and itmedullary secretions affect these contrasting effects?

14. The ganglions in the PNSare __________ to the effector organs than the ganglions in theSNS. Considering myelination, how does this affect speed oftransmission between the two systems?

15. List the receptor typesfor Ach and NE. Which are usually excitatory, inhibitory orboth?

16. The smooth muscle aroundthe blood vessels is innervated by the sympathetic branch of theANS. What occurs to dilate those vessels?

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