MUSCLE
SMOOTH MUSCLE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Striations
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Myofibrils
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Sarcoplasm
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Cilia
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Detailed explanation-1: -ATP supplies the energy for muscle contraction to take place. In addition to its direct role in the cross-bridge cycle, ATP also provides the energy for the active-transport Ca++ pumps in the SR. Muscle contraction does not occur without sufficient amounts of ATP.
Detailed explanation-2: -The muscle cells move by contraction and relaxation by utilizing the energy in the form of ATP. Muscle contraction is initiated by the signal sent by the CNS to the muscle fibres.
Detailed explanation-3: -Mature striated muscle consists of parallel arrays of closely packed myofibrils embedded within sarcoplasm and enveloped by a thin sarcolemmal sheath. Each of the myofibrils shows distinct cross-banding, with light and dark bands caused by the periodic arrangement and interdigitation of the thin and thick myofilaments.