MUSCLE
SKELETAL MUSCLE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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H zone
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M line
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Z disc
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I band
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Detailed explanation-1: -Each H-zone is bisected vertically by a dark line called the M-line. Each light I-band has a darker mid line area called the Z-disc. Sarcomere is the functional unit of the skeletal muscle. It is a region of a myofibril between two successive Z-discs.
Detailed explanation-2: -M-line: The line at the center of a sarcomere to which myosin bind. Z-line: Neighboring, parallel lines that define a sarcomere. H-band: the area adjacent to the M-line, where myosin is not superimposed by actin.
Detailed explanation-3: -noun. ˈem-ˌlīn. : a thin dark line across the center of the H zone of a striated muscle fiber. called also M band.
Detailed explanation-4: -The middle of the H zone has a vertical line called the M line, at which accessory proteins hold together thick filaments.