How does a muscle work?. Remember, muscles can only contract so they can only pull , not push . And it needs certain parts to do this. Microscopic anatomy of muscle The bits and pieces. Sarcolemma – plasma membrane of a muscle cell
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Remember, muscles can only contract so they can only pull, not push. And it needs certain parts to do this.
ACh diffuses across and attaches to receptors that are part of the sarcolemma.
The myosin stays connected to the actin until the molecule of ATD is replaced by a new ATP molecule.