Concept explainers
To determine: The cause of the maximum amplitude of a stimulated muscle contraction.
Introduction: Muscle contraction is usually stimulated by the motor neurons, which are known as somatic motor neurons. The contraction and the relaxation in muscles are brought by the actin and myosin filaments.
Explanation of Solution
When the somatic motor neuron delivers
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Chapter 45 Solutions
CONNECT ACCESS FOR BIOL 01204 <C>
- Can you modify this experiment so that the mass lifted by the muscle contraction continues to increase for every trial? If yes, explain how it should be modified. If no, explain why.arrow_forwardMuscle contraction experiment What will happen to the muscle in the experiment?arrow_forwardReflect back on the Muscle Fatigue investigation we did earlier in this Activity. Choose one of your classmate’s interpretation to one of these questions: What happened to your energy & ability to pinch the clothespin as you progressed through each trial? Why? What might cause one to be able to get more squeezes, in other words, to have less fatigue? Explain in terms of biological concepts. Suggest how the amount of ATP produced cause your muscle cells to be less efficient. When did this change in the amount of ATP produced occur in this investigation? How could you tell? Your muscles would probably recover enough after 10 minutes to operate at the original efficiency. Explain why. Show how specific details from the steps of cellular respiration add details to answer this question.arrow_forward
- Q2\ The process of muscle contraction occurs over a number of key step. What are these steps? Explain with details. *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_forwardState three or more reasons why muscle twitch strengthcan vary even when stimulus intensity remains constant.arrow_forward
- Illustrate the tension generated during isometric contractions of muscle fiber in response to multiple stimuli?arrow_forwardDiscuss about Ca2+-dependent thin-filament regulation of skel-etal muscle contraction.arrow_forwardDescribe the process of motor-unit recruitment in controlling whole-muscle tension and velocity of whole-muscle shortening?arrow_forward
- Explain in detail: What does the ‘sliding filament model of muscle contraction’ discuss or explain? What are filaments composed of and how do contractions occur, commenting on calcium and ATP process.arrow_forwardPlease answer fast a.) define each of the roles of muscles (agonist, antagonist, synerist) and provide practical example. b.) explain in your own word how these various work together to achieve functional movement.arrow_forward23. The diagram below represents an experimental set-up to demonstrate an aspect during muscle construction. fixed support String Kymograph- Frog muscle Pivot (a) State what would happen if a solution of ATP was added to the muscle. (b) Explain why it is necessary to use muscle from a freshly killed animal. (c) Name the part of the mammal represented by: (1) pivot. (ii) string. (iii) fixed support. 4. The apparatus below were used to investigate a certain physiological process in plants.arrow_forward
- Human Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning