Which of the Following Choices Lists a Correct Sequence of Events

question 9

Multiple Choice

Which of the following choices lists a correct sequence of events following the depolarization of transverse tubules in excitation-contraction coupling in cardiac muscle?

• A)Calcium release into cytosol,calcium ion influx through sarcolemma,actin and myosin attach,thin filaments slide toward the middle of sarcomeres
• B)Actin and myosin attach,thin filaments slide toward the middle of sarcomeres,calcium release into cytosol
• C)Calcium release into cytosol,actin and myosin attach,calcium ion influx through sarcolemma,thin myofilaments slide toward the middle of sarcomeres
• D)Calcium release into cytosol,actin and myosin attach,thin filaments slide toward the middle of sarcomeres,calcium ion influx through sarcolemma
• E)Calcium ion influx through sarcolemma,calcium release into cytosol,actin and myosin attach,thin myofilaments slide toward the middle of sarcomeres

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Definitions:

Cationic Polymerization

A type of polymerization where a cationic initiator transfers charge to a monomer causing it to become reactive and link to other monomers.

Poly(acrylonitrile)

A synthetic polymer made by polymerizing acrylonitrile, used in the production of fibers, plastics, and rubbers due to its strength and thermal stability.

Poly (vinyl Acetate)

A polymer made by polymerizing vinyl acetate, used in adhesives, paints, and various coatings.

Repeating Units

Sequential segments of the same structure in a polymer, which repeat numerous times to form the polymer chain.