Which substance is stored in the muscle’s endoplasmic reticulum and then released when a nerve signal stimulates a muscle fiber?Group of answer choicesMyoglobinCalcium ionsATPSarcomeres

Which of the following stores calcium within a muscle fiber?Multiple choice question.MyofibrilSarcolemmaSarcoplasmic reticulumTransverse tubule

An elaborate network of membranes in skeletal muscle fibers that functions as calcium storage is Group of answer choicessarcolemmamyofibrilssarcoplasmsarcoplasmic reticulum

What structure in a muscle fiber acts as a calcium reservoir or storage site?Multiple choice question.Sarcoplasmic reticulumGolgi apparatusSynaptic vesiclesSarcolemma

Which molecule is stored in muscle fibers and can supply quick energy for ATP synthesis?Multiple choice question.MyosinMyoglobinCreatine phosphateAcetylcholine

The neurotransmitter at the neuromuscular junction increases permeability of the muscle cell membrane to ____________.Multiple Choicecalcium ionsphosphatesodium ionscholine