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Title: Explain how the nervous system controls the contraction of skeletal muscles Post by: Jemekeib on Jul 21, 2014 Explain how the nervous system controls the contraction of skeletal muscles, including how the nervous system determines which muscles contract and how forcefully they contract
Title: Re: Explain how the nervous system controls the contraction of skeletal muscles Post by: thebiologist on Jul 22, 2014 Content hidden
Title: Re: Explain how the nervous system controls the contraction of skeletal muscles Post by: Jemekeib on Jul 22, 2014 Thank you!
Title: Re: Explain how the nervous system controls the contraction of skeletal muscles Post by: drjnk on Jul 23, 2014 The skeletal muscle fibers are innervated by large, myelinated nerve fibers that originate from large motoneurons in the anterior horns of the spinal cord. Each nerve fiber, after entering the muscle belly, normally branches and stimulates from three to several hundred skeletal muscle fibers. Each nerve ending makes a junction, called the neuromuscular junction, with the muscle fiber near its midpoint. The action potential initiated in the muscle fiber by the nerve signal travels in both directions toward the muscle fiber ends.
Check this: http://www.fsps.muni.cz/~tvodicka/data/reader/book-4/05.html |