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Contraction band

Contraction band

a microscopic change in myocardial cells in which excessive contraction, associated with elevated intracellular calcium and serum norepinephrine, causes the formation of transverse amorphous bands in the fibres which are then incapable of contracting again.

Synonym: contraction band necrosis.

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Muscle Contractions

... a hard time understanding how actin and myosin react during a muscle contraction. The whole A band, I band, Z line thing is confusing me a bit. Thanks for your time.

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by raym1
Fri Feb 18, 2011 8:33 pm
Forum: Human Biology
Topic: Muscle Contractions
Replies: 1
Views: 7860

The Fiber Disease

... structures thought to exhibit a new type of photonic transmission band corresponding to resonant tunneling of evanescent waves. • Investigated ... adding further stress to the cell boundaries. Bubble expansion and contraction without growing to a critical size is referred to as stable cavitation. ...

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by Nadas Moksha
Sun Sep 10, 2006 3:50 am
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 6263789

Re: Q's-Can someone please check my answers

... fibres are TRUE? 1-When a sarcomere contracts, the width of the A-band remains unchanged. 2-When a muscle contracts, the width of the sarcomeres ... first part is absolutely correct because H width will decrease during contraction and hence bringing the Z-line together. However, I'm unsure if ...

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by ComputerStud
Wed May 31, 2006 2:25 am
Forum: Physiology
Topic: Q's-Can someone please check my answers
Replies: 4
Views: 10366

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