Term
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Definition
| a system of motor neurons that innervate smooth muscle and cardiac muscle as well as glands |
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Term
| What is the main function of the ANS? |
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Definition
| Maintain homeostasis; works with hypothalamus |
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Term
| What are the two divisions of the ANS? |
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Definition
| Sympathetic (fight or flight) and Parasympathetic (rest and digest) |
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Term
| What is the purpose of the ANS? |
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Definition
| Autonomic activation or inhibition of body systems |
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Term
| What is the function of the sympathetic NS? |
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Definition
| Responds to stress: increase body functions that support physical activity; decrease digestive and urinary function |
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Term
| What is the function of the parasympathetic NS? |
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Definition
| Conserve and restore body energy: decrease body functions that support physical activity; increase digestive and urinary function |
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Term
| What is the difference between the neurons of the ANS and those of the CNS? |
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Definition
| the ANS has pre AND post ganglionic neurons which are slower than those in the CNS due to decreased myelin content |
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Term
| Where is the preganglion neuron soma located? |
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Definition
CNS; Sympathetic: lateral horn of thoracolumbar spinal cord
Parasympathetic: brainstem or sacral spinal cord |
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Term
| Where are the postganglionic neuron soma located? |
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Definition
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Term
| The ventral rami serve what area of the body? |
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Definition
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Term
| What areas of the body are only served by the sympathetic NS? |
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Definition
| glands of the skin, blood vessel, and arrector pili muscles |
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Term
| What type of CT are the lungs made of? |
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Definition
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Term
| Define Terminal ganglia and state their location |
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Definition
| located close to wall of an organ, some in the the head but MOST in the gut; Parasympathetic |
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Term
| What type of ganglia have short postganglionic axons? |
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Definition
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Term
| What is the "equation" for parasympathetic preganglionic nerves? |
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Definition
| 4 cranial nerves + sacral spinal nerves |
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Term
| What are the four cranial nerves with parasympathetic function? |
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Definition
CN 3, 7, 9, and 10
(Oculomotor, facial, glossopharyngeal, and vagus) |
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Term
| Issues with what cranial nerve will lead to taste problems? |
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Definition
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Term
| Which cranial nerve has involves 90% of preganglionic parasympathetic fiber for the entire body? |
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Definition
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Term
| What are the two types of sympathetic ganglia? |
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Definition
| paravertebral (paired) and prevertebral (unpaired) |
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Term
| Sympathetic preganglionic axons are ____ while the postganglionic axons are ____ |
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Definition
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Term
| What is the adrenal mudulla? |
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Definition
| highly specialized sympathetic ganglia that secretes norepinephrine and epinephrine (adrenaline) |
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Term
| What is autonomic tone and what structure regulates it? |
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Definition
| balance between sympathetic and parasympathetic branches of the ANS; hypothalamus |
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