Term
| autonomic motor nerves innervate organs whose fxns are |
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Definition
| not usually under voluntary control |
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Term
| What are the effectors that respond to the autonomic regulation? |
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Definition
| Cardiac, smooth muscles, glands |
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Term
| How do the involuntary effects of autonomic innervation contrast with the voluntary control of skeletal muscles? |
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Definition
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Term
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Definition
| neurons of the PNS that conduct impulses away from the CNS |
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Term
| two major types of motor neurons |
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Definition
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Term
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Definition
-cell bodies in CNS
-send axons to skeletal muscles
-usually voluntary
-conduct impulses along a single axon spinal cord-->nueromuscular junction |
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Term
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Definition
| -invole two neurons in efferent pathway |
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Term
| denervation hypersensitivity |
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Definition
| increased sensitivity of smooth muscles to neural stimulation after their innervation has been blocked or removed for a period of time |
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Term
| both sympathetic and parasympathetic divisions consists of |
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Definition
| preganglionic neurons (cell bodies in CNS) and postganglionic neurons (cell bodies in the PNS) |
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Term
| how do the sym and parasym divisions differ |
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Definition
1) origination of the preganglionic fibers 2) location of autonomic ganglia
3)rest/digest:para fight/flight:symp |
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Term
| How are muscles attached to bones? |
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Definition
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Term
| What are skeletal muscles composed of |
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Definition
| seperate cells called fibers, that are attached in parallel to tendons |
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Term
| individual muscle fibers are covered by |
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Definition
|
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Term
| bundles of fibers (_________) are covered by ______________ |
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Definition
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Term
| the entire muscle is coverd by |
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Definition
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Term
| Describe the striation of muscle fibers |
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Definition
| Dark bands=A bands Light=I bands Z bands=middle of each I band |
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Term
| the contraction of muscle fibers in vivo is stimulated by |
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Definition
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