PHYSIOLOGY
MUSCLE CONTRACTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Sarcolemma
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Neuromuscular junction
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Sarcomere
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Motor end plate
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Detailed explanation-1: -A sarcomere extends from one Z disc to the successive Z disc. The Z disc serves to anchor the thin filaments to adjacent sarcomeres. Myofilaments occupy three-dimensional space.
Detailed explanation-2: -The area between two Z lines, a sarcomere, can be considered to be the primary structural and functional unit directly responsible for muscle contraction.…
Detailed explanation-3: -A sarcomere (Greek sarx “flesh", meros “part") is the smallest functional unit of striated muscle tissue. It is the repeating unit between two Z-lines.
Detailed explanation-4: -3 – The Sarcomere: The sarcomere, the region from one Z-disc to the next Z-disc, is the functional unit of a skeletal muscle fiber.
Detailed explanation-5: -A-band: The length of a myosin within a sarcomere. 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.