The sequence of events for the muscle contraction, starting with, "an action potential travels along the axon of a motor neuron." Introduction: Muscle contraction takes place due to the movement of actin and myosin filaments, which are categorized under striated muscle fibers. In this case, the plasma membrane is known as sarcolemma, and the cytoplasm, which is present in the muscles, is known as sarcoplasm. The basic unit of muscle contraction is known as sarcomere, which is formed by the multiple repeating units of actin and myosin filaments.

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Chapter 26, Problem 9WIO

Summary Introduction

To determine:

The sequence of events for the muscle contraction, starting with, "an action potential travels along the axon of a motor neuron."

Introduction:

Muscle contraction takes place due to the movement of actin and myosin filaments, which are categorized under striated muscle fibers. In this case, the plasma membrane is known as sarcolemma, and the cytoplasm, which is present in the muscles, is known as sarcoplasm. The basic unit of muscle contraction is known as sarcomere, which is formed by the multiple repeating units of actin and myosin filaments.

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A) Assuming that each individual muscle fiber generates the same amount of tension, which of the following skeletal muscles will produce the greatest amount of overall tension when fully stimulated? Muscle Total Number of Muscle Fibers in Muscle A 150 B 1000 C 600 Group of answer choices Muscle A Muscle B Muscle C B)The following list of events take place during a muscle contraction. Place the events in chronological order as they relate to a muscle contraction. Calcium is released from the sarcoplasmic reticulum. Myosin heads bind to actin. An action potential arrives at the axon terminal of a motor neuron. Calcium binds to troponin, displacing tropomyosin and exposing myosin head binding sites on actin. Myosin heads undergo power stroke and actin slides over myosin towards M line of sarcomere. Acetylcholine is released at the neuromuscular junction.