HUMAN PHYSIOLOGY: AN INTEG ACCESS C
8th Edition
ISBN: 9780134714837
Author: Silverthorn
Publisher: PEARSON
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Chapter 12.1, Problem 7CC
Summary Introduction
To determine: The molecules which bind at the myosin sites
Introduction: Muscle contraction takes place due to the movement of actin and myosin filaments. These filaments are categorized under striated muscle fiber. The cytoplasm contained by the muscles is known as “sarcoplasm”.
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Chapter 12 Solutions
HUMAN PHYSIOLOGY: AN INTEG ACCESS C
Ch. 12.1 - Identify as many pairs of antagonistic muscle...Ch. 12.1 - Prob. 2CCCh. 12.1 - Prob. 3CCCh. 12.1 - Prob. 4CCCh. 12.1 - What are the three anatomical elements of a...Ch. 12.1 - What is the chemical signal at a neuromuscular...Ch. 12.1 - Prob. 7CCCh. 12.1 - Prob. 8CCCh. 12.1 - Prob. 9CCCh. 12.1 - Name an elastic fiber in the sarcomere that aids...
Ch. 12.1 - Prob. 11CCCh. 12.1 - Prob. 12CCCh. 12.1 - Prob. 13CCCh. 12.1 - According to the convention for naming enzymes,...Ch. 12.1 - Prob. 15CCCh. 12.1 - Prob. 16CCCh. 12.1 - Summation in muscle fibers means that the...Ch. 12.1 - Prob. 18CCCh. 12.1 - Which type of runner would you expect to have more...Ch. 12.1 - What is the response of a muscle fiber to an...Ch. 12.1 - Prob. 21CCCh. 12.2 - One study found that many world-class athletes...Ch. 12.3 - What is the response of a muscle fiber to an...Ch. 12.3 - Prob. 24CCCh. 12.3 - Prob. 25CCCh. 12.3 - Prob. 26CCCh. 12.3 - Prob. 27CCCh. 12.3 - Prob. 28CCCh. 12.3 - What happens to contraction if a smooth muscle is...Ch. 12.3 - Prob. 30CCCh. 12.3 - Prob. 31CCCh. 12.3 - Prob. 32CCCh. 12.3 - How can a neuron alter the amount of...Ch. 12.3 - Prob. 34CCCh. 12.3 - Prob. 35CCCh. 12 - The three types of muscle tissue found in the...Ch. 12 - Which two muscle types are striated?Ch. 12 - Which type of muscle tissue is controlled only by...Ch. 12 - Arrange the following skeletal muscle components...Ch. 12 - The modified endoplasmic reticulum of skeletal...Ch. 12 - Prob. 6RQCh. 12 - Prob. 7RQCh. 12 - List six proteins that make up the myofibrils....Ch. 12 - List the letters used to label the elements of a...Ch. 12 - Briefly explain the functions of titin and...Ch. 12 - During contraction, the __________ band remains a...Ch. 12 - Explain the sliding filament theory of...Ch. 12 - Explain the roles of troponin, tropomyosin, and...Ch. 12 - Which neurotransmitter is released by somatic...Ch. 12 - What is the motor end plate, and what kinds of...Ch. 12 - Prob. 16RQCh. 12 - Prob. 17RQCh. 12 - Prob. 18RQCh. 12 - The basic unit of contraction in an intact...Ch. 12 - The two functional types of smooth muscle are...Ch. 12 - Prob. 21RQCh. 12 - Prob. 22RQCh. 12 - Prob. 23RQCh. 12 - Define muscle fatigue. Summarize factors that...Ch. 12 - Prob. 25RQCh. 12 - Prob. 26RQCh. 12 - Prob. 27RQCh. 12 - What is the role of the sarcoplasmic reticulum in...Ch. 12 - Compare and contrast: a. fast-twitch...Ch. 12 - Prob. 30RQCh. 12 - One way that scientists study muscles is to put...Ch. 12 - Prob. 32RQCh. 12 - On the basis of what you have learned about muscle...Ch. 12 - Prob. 34RQCh. 12 - Prob. 35RQ
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- How do the different structures and properties of myosin II and myosin V reflect their different functions in cells?arrow_forwardWhat are the difference between actin and myosin.arrow_forward1. a) Why are muscles not in a contracted state all the time? b) Several hours after the death of an animal, a state of rigor mortis, extreme rigidity of the body, occurs. With respect to myosin and actin filaments, why does this occur? What causes the body to relax more later in time? Explain.arrow_forward
- Which of the following regions of a sarcomere at rest is characterized by the presence of myosin only? a) A band b) H zone c) I band d) Z linearrow_forwardIf a muscle cell’s sarcoplasmic reticulum had little to no Ca2+, could the muscle cell still produce an electrical impulse, and would the muscle cell still contract? Explain.arrow_forwardWrite the difference between Actin and Myosin.arrow_forward
- Myosin II has a duty ratio of 10 percent, and its step size is 8 nm. In contrast, myosin V has a much higher duty ratio (about 70 percent) and takes 36-nm steps as it walks down an actin filament. What differences between myosin II and myosin V account for their different properties?arrow_forwardCardiac and skeletal muscle are both “striated” types of muscle and yet they have very distinct functional characteristics. a) Skeletal muscle functions as discrete motor units and the cardiac muscle works as a functional syncytium. Define the italicized terms in the previous sentence, explain their importance, and describe the cellular features that underlie these functional differences. b) Cardiac muscle exhibits automaticity, while excitation of skeletal muscle is neurogenic. Define the italicized terms and provide a brief explanation of mechanisms underlying each.arrow_forwardWhat is the importance of ATP in dissociating actin and myosin?arrow_forward
- How does myosin convert the chemical energy released by ATP hydrolysis into mechanical work?arrow_forwardFor the myosin head to form cross bridges with actin, it is necessary for to bind to actin. a) Calcium b) Troponin c) Sarcolemma d) ATParrow_forwardWhat proteins are found in actin filaments?arrow_forward
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