The action potential moves from the sarcolemma surface deep into the myofiber via the Blank______.Multiple choice question.sarcoplasmmyosin filamentssarcoplasmic reticulumT tubules

An action potential enters a muscle cell at the ____________.Multiple Choiceactin myofilamentsnucleusT tubulesarcomere

n action potential for a muscle cell is propagated along the __________.Multiple Choicesarcomeresarcolemmatropomyosinsarcoplasm

In order for the excitation-contraction coupling to occur, the production of an action potential must occur within the Blank______ of a muscle fiber.Multiple choice question.sarcolemmajunctioncontraction

Excitation-contraction coupling begins with ______________.Multiple Choicethe release of a cross-bridgedepolarization of the transverse tubulesthe release of calcium from the sarcoplasmic reticulumproduction of an action potential on the sarcolemma

A sarcomere Blank______.Multiple choice question.is the same thing as sarcoplasmic reticulumis the same thing as a muscle cellcontains both actin and myosincontains either actin or myosin