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

Excitation-contraction coupling refers to Blank______.Multiple choice question.the actions that link the action potential of the sarcolemma to the shortening of sarcomeresthe actions that link rigor formation to the hydrolysis of ATPthe actions that link the calcium release from the sarcoplasmic reticulum to the change in troponin structurethe actions that link the action potential in the neuron to the diffusion of ACh through the cleft

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

Put the following events of excitation-contraction coupling in the correct order.Rank the options below.Calcium ions are released into the sarcoplasm.Calcium ions are released into the sarcoplasm. open choices for rankingThe troponin-tropomysin complex moves, exposing active sites on the actin myofilaments.The troponin-tropomysin complex moves, exposing active sites on the actin myofilaments. open choices for rankingThe heads of myosin myofilaments bind to sites on the actin myofilaments, forming cross-bridges.The heads of myosin myofilaments bind to sites on the actin myofilaments, forming cross-bridges. open choices for rankingCalcium ions bind to troponin molecules on the actin myofilaments.Calcium ions bind to troponin molecules on the actin myofilaments. open choices for rankingA nerve impulse causes ACh to be released at a neuromuscular junction.A nerve impulse causes ACh to be released at a neuromuscular junction. open choices for rankingThe T tubules carry the action potential to the interior of the muscle fiber.

What triggers the release of calcium ions from the sarcoplasmic reticulum?Multiple choice question.The repolarization of the sarcolemmaThe movement of troponinThe depolarization of the adjacent transverse tubuleATP release

In response to action potentials arriving along the transverse tubules, the sarcoplasmic reticulum releasesQuestion 5Select one:a.H+b.Ca2+c.K+d.Na+e.ACh