Biology: Concepts and Investigations
5th Edition
ISBN: 9781260259049
Author: Hoefnagels
Publisher: MCG
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Textbook Question
Chapter 29, Problem 11WIO
Write the sequence of events that leads to a muscle contraction, starting with “Action potentials occur in the axon of a motor neuron.”
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Chapter 29 Solutions
Biology: Concepts and Investigations
Ch. 29.1 - How do the skeletal and muscular systems interact?Ch. 29.1 - Prob. 2MCCh. 29.2 - What are the components of the axial and...Ch. 29.2 - Prob. 2MCCh. 29.3 - Prob. 1MCCh. 29.3 - What are the differences between spongy bone and...Ch. 29.3 - Prob. 3MCCh. 29.3 - Prob. 4MCCh. 29.3 - Prob. 5MCCh. 29.4 - Prob. 1MC
Ch. 29.4 - Prob. 2MCCh. 29.4 - How do ATP, motor neurons, and calcium ions...Ch. 29.5 - Prob. 1MCCh. 29.5 - Prob. 2MCCh. 29.6 - Prob. 1MCCh. 29.6 - Prob. 2MCCh. 29.6 - Prob. 3MCCh. 29.7 - Prob. 1MCCh. 29.7 - Prob. 2MCCh. 29 - Prob. 1MCQCh. 29 - The axial skeleton is to the appendicular skeleton...Ch. 29 - Prob. 3MCQCh. 29 - Prob. 4MCQCh. 29 - Prob. 5MCQCh. 29 - Prob. 6MCQCh. 29 - Prob. 1WIOCh. 29 - Prob. 2WIOCh. 29 - Prob. 3WIOCh. 29 - Prob. 4WIOCh. 29 - Prob. 5WIOCh. 29 - Prob. 6WIOCh. 29 - Describe four muscle proteins and their functions.Ch. 29 - Prob. 8WIOCh. 29 - Prob. 9WIOCh. 29 - Prob. 10WIOCh. 29 - Write the sequence of events that leads to a...Ch. 29 - Prob. 12WIOCh. 29 - Refer to figure 29.24 and the chapter content to...Ch. 29 - 3. Add exercise to the concept map in at least...
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- What is the function of the sarcoplasmic reticulum in muscle cell contraction?arrow_forwardDiscuss the sequence of events between a Motor Neuron Action Potential and Skeletal Muscle Fiber Contraction?arrow_forwardDistinguish between skeletal, smooth, and cardiac muscle in terms of location and whether they have sarcomeres. Use the sliding filament model to draw how thin filaments, thick filaments, and Z lines move during muscle contraction. Predict how perturbations of acetylcholine release, reception, or breakdown will influence muscle contraction. Predict how perturbations of actin, troponin, tropomyosin, myosin, or calcium would influence muscle contraction. Distinguish between the sympathetic and parasympathetic nervous system. Predict how changes in stress levels or situations would affect activation of the sympathetic and parasympathetic nervous system, levels of epinephrine and norepinephrine, and blood pressure.arrow_forward
- Describe the sequence of events that occurs when an action potential arrives at a muscle fiber’s motor endplate, causing the muscle to be depolarized.arrow_forwardDescribe the contraction of a muscle fiber, starting with what events take place at the neuromuscular junction, explaining how depolarization along the length of the sarcolemma occurs, the role of calcium (where it is released, what it binds to, etc.), and the events that occur after calcium binds to troponin. Draw a few simple, labelled diagrams of a neuromuscular junction and sarcomere and outline the steps of excitation-contraction coupling, including power stroke, recovery stroke, formation of cross bridges, role of ATP, etc.arrow_forwardA) 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.arrow_forward
- Name the system that provides a ready supply of phosphocreatine to muscle cells and describe where the different components of this system take place.arrow_forwardExplain how optimal skeletal muscle force (high muscle tension) can be achieved during a high intensity exercise. (Mention and explain how wave summation, motor recruitment summation, muscle length, and type of muscle fibers activated can affect muscle force).arrow_forwardDescribe the basic sequence of events that occurs at the neuromuscular junction and in the muscle cell during excitation and excitation-contraction coupling.arrow_forward
- Put these events that occur in skeletal muscle in the correct chronological sequence: 1. Opening of mechanically-gated ryanodine receptors (RyR) on the sarcoplasmic reticulum 2. Ca²+ binding to troponin to initiate contraction 3. Activation of voltage-gated dihydropyridine (DHP) receptor in the T-tubule 4. Na+ influx through ligand-gated ion channels on the motor end plate 4, 3, 2, 1 2, 1, 4, 3 3, 1, 2, 4 4, 3, 1, 2 3, 1, 4, 2arrow_forwardList and describe all of the major events that occur during a muscle contraction starting with the arrival of a motor command at a neuromuscular junction and ending with the shortening of the sarcomere.arrow_forwardDefine the sliding filament model of muscle contraction. Describe the steps of this process.arrow_forward
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