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Muscle contraction

muscle contraction

A process leading to shortening and/or development of tension in muscle tissue. Muscle contraction occurs by a sliding filament mechanism whereby actin filaments slide inward among the myosin filaments.

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... is also activated by calcium (through the phosphorylase kinase) due to muscle contraction. Or am I mixing everything up?

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by Aymeric
Fri Dec 13, 2013 2:46 pm
Forum: Human Biology
Topic: When does gluconeogenesis kick in during physical activity?
Replies: 12
Views: 10423

Muscle Fiber Types are FICTIONAL, or is it not?

Hi everyone, Can difference in muscle fiber types be actually physically seen if muscle being cut and put under microscope? ... weight - body has to grow muscle size, in order to do that it needs fast muscle contraction, which is achieved with bigger impulse coming from motor neurons. That's ...

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by GPiklaov
Thu May 16, 2013 2:31 pm
Forum: Human Biology
Topic: Muscle Fiber Types are FICTIONAL, or is it not?
Replies: 0
Views: 2753

Effect of low temperature on smooth muscle

... explanation on effect of low temperature(3 degree celsius) on smooth muscle in vitro. I broke them down in parts and I just can't find any physiological ... sort of spasm after initial contact with cold water before resuming contraction albeit at a lower frequency and amplitude. Can anyone point ...

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by mitchrapp2000
Thu May 03, 2012 5:13 pm
Forum: Physiology
Topic: Effect of low temperature on smooth muscle
Replies: 0
Views: 2578

Nervous system

... release IV. Blockage of receptor sites for acetylcholine in the muscle Identify all the factors that would cause muscles used in breathing ... experiment, the strength of a neural stimulus and the resulting muscle contraction are compared. A single motor neuron that synapses with a muscle ...

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by Catherine89
Sun Feb 05, 2012 7:22 pm
Forum: Human Biology
Topic: Nervous system
Replies: 0
Views: 5031

Statement about Muscle Contraction correct?

"Ca2+ activates Ca-dependent protein kinases that activates to interact with thin filaments." Is this statement correct? What exactly is the protein kinases then? What exactly is the definition of "heteronymous innervation"? I found no clear answer on the web. I read this next to...

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by saryanki
Mon Jan 30, 2012 1:54 pm
Forum: Physiology
Topic: Statement about Muscle Contraction correct?
Replies: 1
Views: 2799
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