Human Physiology: An Integrated Approach (8th Edition)
8th Edition
ISBN: 9780134605197
Author: Dee Unglaub Silverthorn
Publisher: PEARSON
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Chapter 12.1, Problem 9CC
Summary Introduction
Introduction: ATP or adenosine triphosphate is known as the energy currency of the cell. It provides energy for catalyzing various important biochemical reactions and
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Chapter 12 Solutions
Human Physiology: An Integrated Approach (8th Edition)
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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- The filaments of skeletal muscle are moved by free energy derived from the hydrolysis of ATP. During sustained muscle contraction ATP levels remain fairly constant, while levels of creatine phosphate fall. Explain why this is so. Under what circumstances is an oxygen debt incurred during muscle contraction?arrow_forwardYour friend wants to join you in your exercise routine, which includes running at least 3 km every morning. This form of exercise requires adequate energy. Discuss three pathways that are involved in the production of energy during muscle contractionarrow_forwardAfter death, a person no longer makes ATP, and calcium stored in the specialized endoplasmic reticulum of muscle fibers diffuses down its concentration gradient into the muscle cytoplasm. The result is rigor mortis—an unbreakable state of muscle contraction. Explain why the contraction occurs and why it is irreversible.arrow_forward
- Skeletal muscle cell(key terms: striated, contracting proteins, contractions, nucleus location) This feature of the muscle cell helps to do its job becausearrow_forwardWeight training causes fast glycolytic fibers to hypertrophy (increase in diameter). Explain why this increases strength.arrow_forwardShortly after a person dies, Ca2+diffuses out of the saroplasmic reticulum and the body becomes very still and rigid, a phenomenoncalled rigor mortis (rig′er mōr′tis). Given ATP’s role in myosin head movement, propose an explanation for rigor mortis.arrow_forward
- The human body has mainly two types of muscle fibres: slow-twitch and fast-twitch. The { slow or fast} twitch contract slowly and resist fatigue and produce most of their energy through { aerobic or anaerobis} rispiration. These muscle fibres are best used for activities like { weight lifting and playing tennis or biking and jogging} The { slow or fast} twitch are adapted for the rapid regeneration of power. They can best be used in activities such as { weight lifting and playing tennis or biking and jogging}. They are rich in glycogen and depend on { aerobic or anaerobis} rispiration. to produce energy. This leaves them vulnerable to the accumulation of lactate and they fatigue quickly. which one are those? the answersarrow_forwardSkeletal muscles would be expected to contain large numbers of ————— because of their high energy demands 1. Lysosomes 2.cilia 3. Mitochondria 4. Chloroplastsarrow_forwardA skeletal muscle can often maintain a moderate level of active tension for long periods of time, even though many of its fibers become fatigued Explain.arrow_forward
- For a skeletal muscle to remain rigidly contracted, it needs a continual supply of ATP. Yet, when a skeletal muscle runs out of ATP (in a corpse), it becomes rigid. How can you explain this seeming paradox? Explain how skeletal muscle may remain relaxed even if ATP levels are high.arrow_forwardA smooth, sustained contraction from rapid stimulation of skeletal muscle fibers is called ________.arrow_forwardMyofibis in muscle fibres are made up of repeating units of dark and light bonds calledarrow_forward
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