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ANAT UNIT 1 FINAL
INTRODUCTION TO THE ANS
| Question | Answer |
|---|---|
| In the 2-neuron series of the ANS, the soma of the first nerve cell is ALWAYS located in: | THE CNS |
| In the 2-neuron series of the ANS, the soma of the first nerve cell is ALWAYS located in: | A GANGLION IN THE PNS |
| The first nerve cell is the pre or postganglionic neuron? | PREGANGLIONIC |
| The second nerve cell is the pre or postganlionic neuron? | POSTGANGLIONIC |
| What does the axon of the preganglionic neuron synapse with? | THE POSTGANGLIONIC NEURON |
| What does the axon of the postganglionic neuron synapse with? | THE TARGET TISSUE |
| Where are the preganglionic sympathetic neuron cell bodies? | LATERAL HORN OF THE SPINAL CORD FROM T1-L2 |
| Where are the preganglionic parasympathetic neuron cell bodies? | BRAINSTEM AND LATERAL HORN OF S2-S4 |
| Where are postganglionic sympathetic neuron cell bodies? | (MOSTLY) IN THE SYMPATHETIC CHAIN OR PRE-AORTIC GANGLIA |
| Where are postganglionic parasympathetic neuron cell bodies? | IN OR NEAR THE TARGET ORGAN |
| Where do postganglionic sympathetic fibers distribute to? | BODY WALL AND MOST VISCERAL ORGANS |
| Where do postganglionic parasympathetic fibers distribute to? | VISCERAL ORGANS |
| Which system acts more globally, sympathetic or parasympathetic? | SYMPATHETIC |
| Which system is more structured and works on specific target organs, sympathetic or parasympathetic? | PARASYMPATHETIC |
| How is the sympathetic chain ganglia connected to the spinal nerves? | GRAY AND WHITE RAMI COMMUNICANTES |
| Where are the white rami communicantes located? | T1-L2 |
| True or false: gray rami communicantes connect only spinal nerves T1-L2 to the sympathetic chain? | FALSE. They connect ALL spinal nerves to the sympathetic chain. |
| What type of fibers are in the vagus nerve? | PREGANGLIONIC PARASYMPATHETIC AND GVA (VISCERAL SENSORY) |