iphy 3430 lecture 16

iphy 3430 lecture 16 - multiunit = neurogenic, single unit...

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Smooth Muscle differs from skeletal actin, myosin and intermediate filaments that serve as cytoskeleton can be stretched very much and still contract actin lacks troponin, myosin must be phosphorylated arrangement of actin and myosin differs slow contraction, can remain contracted for very long periods of time most cells myogenic, but also some can be stimulated by PNS
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Unformatted text preview: multiunit = neurogenic, single unit = myogenic Skeletal, cardiac and smooth all use ATP all have actin and myosin Ca++ plays some role in contraction initiation but. .. Skeletal Cardiac Smooth innervation motor PNS, SNS PNS contr. Initiat. Neurogenic myogenic both Ca++ source sarcopls. ret. xtracell. xtracell. T tubules yes yes no see Table 8-4...
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This note was uploaded on 05/25/2008 for the course IPHY 3430 taught by Professor Lynch,robe during the Summer '08 term at Colorado.

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iphy 3430 lecture 16 - multiunit = neurogenic, single unit...

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