Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Chapter 4.4, Problem 1BC
Summary Introduction
To analyze:
The three types of movements that occur during muscle contraction.
Introduction:
Muscles are the connective tissues that are widely spread throughout the body and help to provide movement and flexibility to the body. The muscles are divided into cardiac, skeletal, and visceral muscles.
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What are the two types of muscle movement categories? Give an example for both.
Describe Swammerdam's experiment and Galvani's experiment with frog legs. What did they tell us about muscle
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. What is the sliding-filament model for muscle contraction? Describe the role of actin and myosin of sarcomeres in
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4. Describe how an action potential triggers muscle contraction. Know the specific molecules involved.
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How is the list below to be properly put in order to describe a muscular contraction?
1. Calcium causes exocytotic release of Acetylcholine into the synaptic gap; all this happens at an area called the neuromuscular junction2. ATP is consumed which allows myosin to "pivot" the myosin head, which pulls actin toward it.3. This process is repeated multiple times and is called the "sliding filament theory".4. Myosin filaments perform "crossbridging".5. Calcium is released and circulated throughout the muscle cell6. The brain predicts the action necessary and decides which muscles and how many "motor units" are needed to perform that action.7. Tropomyosin moves to reveal the active site of the F-Actin strand8. Upon reception of a calcium ion, the Troponin complex becomes activated9. Proteins embedded in the Sarcolemma receive enough of the ACH neurotransmitter to generate an electrical impulse.10. The electrical impulse is perpetuated throughout the muscle fiber.11. A nervouse impulse is…
The sliding filament model depicts how myosin motors attached to actin lead to muscle contraction. This process proceeds in a precise series of events. Indicate which of the following shows the correct order of steps in the sliding filament model.
Group of answer choices
Myosin binds ATP; myosin tightly binds actin; power stroke; myosin releases actin
Myosin binds GTP; myosin releases actin; power stroke; myosin tightly binds actin
Actin binds ATP; power stroke; myosin tightly binds actin; actin releases ADP
Actin binds ADP; myosin releases actin; power stroke; actin releases ADP
Chapter 4 Solutions
Principles of Biology
Ch. 4.1 - With regard to the origin of life, why are...Ch. 4.1 - Prob. 2CCCh. 4.1 - Prob. 3CCCh. 4.1 - Prob. 1BCCh. 4.1 - Prob. 4CCCh. 4.1 - Prob. 1TYKCh. 4.1 - Prob. 2TYKCh. 4.1 - Prob. 3TYKCh. 4.2 - Prob. 1CCCh. 4.2 - Prob. 1TYK
Ch. 4.2 - Prob. 2CCCh. 4.2 - Prob. 2TYKCh. 4.3 - Prob. 1BCCh. 4.3 - Prob. 1CCCh. 4.3 - Prob. 2BCCh. 4.3 - Prob. 1TYKCh. 4.3 - Prob. 2TYKCh. 4.3 - Prob. 3TYKCh. 4.4 - Prob. 1BCCh. 4.4 - Prob. 1CCCh. 4.4 - Prob. 1TYKCh. 4.4 - Prob. 2BCCh. 4.4 - Prob. 2TYKCh. 4.4 - Prob. 3TYKCh. 4.5 - What is the function of the nuclear lamina and the...Ch. 4.5 - Prob. 1BCCh. 4.5 - Prob. 2CCCh. 4.5 - Prob. 1TYKCh. 4.5 - Prob. 2TYKCh. 4.5 - Prob. 3TYKCh. 4.6 - What is the advantage of having a highly...Ch. 4.6 - Prob. 1BCCh. 4.6 - Prob. 2CCCh. 4.6 - Prob. 1TYKCh. 4.6 - Prob. 2TYKCh. 4.7 - Prob. 1TYKCh. 4.8 - Prob. 1CCCh. 4.8 - Prob. 2CCCh. 4.8 - Prob. 3CCCh. 4.8 - Prob. 4CCCh. 4.8 - Prob. 1TYKCh. 4.8 - Prob. 2TYKCh. 4.8 - Prob. 3TYKCh. 4.9 - Which of the following could be found in a...Ch. 4.9 - Prob. 2TYKCh. 4 - The cell theory states that all living things are...Ch. 4 - Prob. 2TYCh. 4 - Prob. 3TYCh. 4 - Prob. 4TYCh. 4 - Prob. 5TYCh. 4 - Prob. 6TYCh. 4 - Prob. 7TYCh. 4 - Prob. 8TYCh. 4 - Prob. 9TYCh. 4 - Prob. 10TYCh. 4 - Describe two specific ways that protein-protein...Ch. 4 - Explain how motor proteins and cytoskeletal...Ch. 4 - A principle of biology is that structure...Ch. 4 - Prob. 1CBQCh. 4 - Prob. 2CBQ
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- In an isometric contraction, how can the muscle stay the same length when the muscle is contracting? Can choose more than one - The muscle is not able to generate more (or the same amount) force than the load, preventing shortening of the muscle. - Calcium stops entering the sarcoplasm when the desired length is reached. - Elastic elements of the muscle stretch in response to the contraction of the muscle, so that the muscle stays the same size despite shortening sarcomeres. - The myosin heads detach from actin when they reach the desired length.arrow_forward1. What are the two types of muscle movement categories? Give an example for both. 2. Describe Swammerdam's experiment and Galvani's experiment with frog legs. What did they tell us about muscle contraction? 3. What is the sliding-filament model for muscle contraction? Describe the role of actin and myosin of sarcomeres in the model (be specific). 4. Describe how an action potential triggers muscle contraction. Know the specific molecules involved. 5. Describe the structural and functional differences between smooth, cardiac and skeletal muscles. What are the three types of skeletal muscle fibers and how do they differ in structure and function? « Previous Next MacBook Proarrow_forwardDescribe what is happening overall in the first sentence. Then describe, in detail, what is happening in each step below. Include details about what is happening at steps 5 - 7 in terms of calcium and the contraction mechanism (from a different figure). (a) -Axon terminal of somatic motor neuron Muscle fiber ACh- potential Action Na+ Action potential- -Motor end plate- lell Ca2+ released Myosin thick filament 6 + + + ++arrow_forward
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