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Hardening and thickening of the heart muscle, known as hypertrophic cardiomyopathy, is often the result of genetic inheritance, according to MedlinePlus. Defects and mutations in the genes that... Hardening and thickening of the heart muscle, known as hypertrophic cardiomyopathy, is often the result of genetic inheritance, according to MedlinePlus. Defects and mutations in the genes that... Star Gazing
As explained on the previous page (structures of muscle filaments), there are two physical units that are important for the action of muscles. They are thick filaments and thin filaments. Muscle tissue can be described in terms of units called sacromeres.These units are defined in terms of groups of overlapping filaments (the thin and thick filaments previously described). Sacromeres are arrangements of thick and thin filaments.uring Muscle Contraction : The myosin heads on the thick filaments hook onto, and so pull, the thin filaments towards the centre (labelled M-line) of each sacromere. The appearance of this action is shown above as the transistion from relaxed to fully contracted muscle.