Anatomy and Physiology I In Class Assignment-Chapter 9 Professor: Mark D. Graves

Question

Anatomy and Physiology I In Class Assignment-Chapter 9 Professor: Mark D. Graves Question 1: Place the following steps of an action potential in order (or draw them), t musde cell A) Neurotransmitter release B) Depolarization of mus cle sell C) Repolarization D) sodium diffuses into cell E) Potassium diffuses out of cell F) Calcium enters cytoplasm ) calcium binds to troponin Cocking of Myosin heady powerstroke J) sliding of actin and myosin K) neurotransmitter is degraded L)Na/K ATPase pumps out 3 Na for 2 K Points earned /1pt Explain the importance of the following molecules in skeletal muscle contraction: Glycolysis, lactic acicd fermentation, aerobic, anaerobic, myoglobin, oxygen, calcium Points earned /2pt

Explanation / Answer

1) The sequence of events in action potential are listed below,

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