Sarcomere

Here's a diagram of a sarcomere, which is the basic contractile unit of muscle fibers in human physiology:

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| Z-line | I-Band | A-Band | H-zone ________ __________ ___ __________ ________ __________.
_____ ______ ______ __________ _________ ____ _____ __________ _____ __________.
_________ _______ ___ _____ ____ __________ _____ ______ ______ ____.
____ _______ _______ ______ ________.
__________ ___ ______ _______ ________ ________ _________ ____ __________ ___ ___.
___ ____ _______ _____ _______ ________ _____ ___ ____ _____.
_______ _____ ________ _________ ______.
____ __________ _______ _____ ___ _____ ________ _________ __________.
___ _______ ____ _______ __________ _____ ______ _____ __________ __________.
________ _______ _______ _____ _____ ______ _______ _______.
________ ______ _______.
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