The release of calcium ions initiates muscle contractions. Watch this video
Chapter 10, Problem 3(choose chapter or problem)
The release of calcium ions initiates muscle contractions. Watch this video (http://openstaxcollege.org/l/ calciumrole) to learn more about the role of calcium.
(a) What are T-tubules and what is their role?
(b) Please also describe how actin-binding sites are made available for cross-bridging with myosin heads during contraction.
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