Review the videos below on the steps of muscle contraction:
1) Events at the neuromuscular junction
2) Excitation-contraction coupling
3) Crossbridge cycle
These videos illustrate the steps that occur for skeletal muscle cells, which are very similar to cardiac, heart, muscle cells which contract in a very similar way.
1 Now outline how alterations at the chemical level cause complications at the organismal level: How does crude oil interrupt heart cell signaling and overall heart cell function? What does this do to the fish?
2 An outline of the research techniques used in this study, including brief description of each technique.
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