Human AΠ b) the 1. Incorporates certain crainial nerves, including the Vagus

Question

Human AΠ b) the 1. Incorporates certain crainial nerves, including the Vagus (a) the sympathetic "system parasympathetic "system" (c) both a and b (d) neither a or b 2. Cell bodies for these nerve fibers are located in the thoracic and lumbar regions of the spinal cord (a) the sympathetic "system" (b) the parasympathetic "system" (c) both a and b (d) neither a or b 3. Preganglionic fibers generally synapse in spinal chain ganglia (a) the sympathetic "system" (b) the parasympathetic "system" (c) both a and b (d) neither a or b 4. Preganglionic fibers might synapse in collateral ganglia (a) the sympathetic "system" (b) the parasympathetic "system" (c) both a and b (d) neither a or b 5. Preganglionic fibers use acetylcholine as their neurotransmitter (a) the sympathetic "system" (b) the parasympathetic "system" (c) both a and b (d) neither a or b 6. Postganglionic fibers use acetylcholine as their neurotransmitter (a) the sympathetic "system" (b) the parasympathetic "system" (c) both a and b (d) neither a or b 7. Preganglionic fibers use norepinepherine as a neurotransmitter (a) the sympathetic "system (b) the parasympathetic "system (c) both a and b (d) neither a or b 8. Postganglionic fibers use norepinepherine as a neurotransmitter (a) the sympathetic "system" (b) the parasympathetic "system" (c) both a and b (d) neither a or b 9. preganglionic fibers are generally longer than postganglionic fibers (a) the sympathetic "system" (b) the parasympathetic "system" (c) both a and b (d) neither a or b 10. The terms nicotinic and muscarinic describe receptors for (a) the sympathetic "system" (b) the parasympathetic "system (c) both a and b (d) neither a or b 11. Alpha and Beta receptors are associated with (a) the sympathetic "system" (b) the parasympathetic "system" (c) both a and b (d) neither a or b 13. a true statement (a) organs and tissues generally are innervated by either sympathetic or parasympathetic fibers but not by both (blwe can correctly describe one of the effects of sympathetic stimulation as increased alertness (c)drugs called beta blockers selectively target the parasympathetic system (d) the adrenal medulla acts much like a parasympathetic ganglion 14. These are simply "naked" sensory nerve endings (a) pain receptors (b) deep touch receptors (c) muscle stretch receptors (d)visual receptors

Explanation / Answer

1. The correct answer is - b) the parasympathetic "system".

Additional information:

Parasympathetic nervous system is an important part of the autonomic nervous system . It contains several cranial nerves (mainly occulomotor, facial, glossopharyngeal , vagus .) and three spinal nerves.

2. The correct answer is - a) the sympathetic "system ".

Additional information:

Sympathetic nervous system is an important part of the autonomic nervous system. There are two types of neurone involved in the sympathetic nervous system 1. Preganglionic, 2. Post ganglionic. Preganglionic neurones originate from the thoraco-lumber region of spinal cord.

3. The correct answer is - a) the sympathetic "system".

Additional information :

Spinal chain ganglia also known as sympathetic ganglia. It is the main junctional point of preganglionic & postganglionic sympathetic nerves. Here preganglionic fibers synapses with postganglionic nerves.

4. The correct answer is - a) the sympathetic "system".

Additional information:

Collateral ganglia is sympathetic ganglia and are situated in thorax, abdomen and pelvis. It recieve preganglionic fibres T5 to L2 segments. Postganglionic fibers from these ganglia supply the visceral organs.

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