Answer:
The correct answer is:
Explanation:
Skeletal muscle is the muscle that is attached to the skeleton and is made up of elongated and polynucleated fibers. Its function is to help the movement and maintain the union of the bone joint in the contraction movement.
The myocardium is the muscle tissue found in the heart; Its function is, through its contraction, to pump blood from the circulatory system.
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Removal of calcium from cytoplasm/sarcoplasm and Stimulus to open RyR.
Exitation-contraction coupling relates to the sequence of events by which an elctrical event in the sarcolemma of a muscle cell starts the sliding of myofilaments which results in contraction.
The steps of excitation-contraction reaction are
Calcium ion release and depolarization
The development of a cross-bridge between actin and myosin.
Actin and myosin filaments slide back and forth.
Shortening of sarcomeres (muscle contraction).
Thus, the correct options are a, Removal of calcium from cytoplasm/sarcoplasm and c, Stimulus to open RyR.
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