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How is the H band distinguished from the other prominent structural features of the sarcomere?
Wiki User
∙ 12y ago
It is a lighter region that contains thick filaments, but no thin filaments.
Wiki User
∙ 12y ago
The H band is located at the center of the A band in the sarcomere and is where only thick filaments (myosin) are present, with no overlap with thin filaments (actin). It appears lighter under a microscope due to the organization of filaments. This region shortens during muscle contraction as the myosin filaments slide past the actin filaments towards the M line.
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