MUSCLE NERVE CARTILAGE BONE
SKELETAL MUSCLE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the H zone
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2 sarcomeres and thick filaments
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parts of 2 adjacent sarcomeres and thin fiaments
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All of the above
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Detailed explanation-1: -The light bands are called I bands and contain only thin filaments. The dark bands are called A bands and contain thick and thin filaments, with the thick filaments running the entire length of the A band. Thus the length of the thick filament determines the length of the A band.
Detailed explanation-2: -The dark bands are composed of thick myosin filaments, while the light bands are composed of thin actin filaments.
Detailed explanation-3: -A bands (or anisotropic bands): It is also called the dark band and contains the whole thick filament (myosin). I bands (or isotropic bands): it is called the light band that contains only the thin filament (actin). The thin filament lies between the two thick filaments.
Detailed explanation-4: -The thin bands are made of multiple molecules of a protein called actin.
Detailed explanation-5: -– The A-band contains both thick and thin filaments and is the center of the sarcomere that spans the H zone. During contraction, the H-zone, I-band, the distance between Z-lines, and the distance between M-lines all become smaller.