using no more than 11 propositions, describe the sequence of events involved in

Question

using no more than 11 propositions, describe the sequence of events involved in initiating a skeletal muscle cell contraction

Starting Term Linking Phrase Ending Term 2 Add O acetylcholine molecules are located on O acetylcholine receptors are primarily responsible for o action potentials on the Cell membrane called o acetylcholine molecules depolarization events at the muscle @ acetylcholine receptors axon of a neuron o cause the opening of ) action potentials on the axon of a neurorn O axon terminals o calcium ions O end plate potentials 0trigger exocytosis of axon terminals when open, allow influx of calcium ions when open, allow the outflow of end plate potentials motor end plate regions of sarcolemma potasslum ions sodium ions voltage-gated calcium motor end plate regions of sarcolemma potassium ions sodium ions channels voltage-gated calcium channels Undo Clear All Save Map Submit Map

Explanation / Answer

Voltage-gates calcium channels are located on axon terminals. Action potential on the axon of a neuron cause the opening of voltage-gates calcium channels. Calcium ions trigger exocytosis of acetylcholine molecules. Acetylcholine receptors are located on motor end plate region of sarcolemma. Acetylcholine receptors when open allow influx of sodium ions. Acetylcholine receptors when open allow outflow of potassium ions. Sodium ions are primarily responsible for the depolarization events at the muscle cell membrane called end plate potential.

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