HUMAN PHYSIO W/ APR & PHILS (LL) PKG
15th Edition
ISBN: 9781265382353
Author: Fox
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 12, Problem 31RA
Summary Introduction
To review:
The importance of high-energy phosphates stored in muscles in the form of creatine phosphate during exercise and the results of muscles in the absence of ATP (adenosine triphosphate).
Introduction:
The contraction and relaxation of muscles results in body movements. During exercise or workout, the contraction of muscles occurs at a high rate. The energy required for
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Chapter 12 Solutions
HUMAN PHYSIO W/ APR & PHILS (LL) PKG
Ch. 12 - Describe the actions of muscles when they...Ch. 12 - Describe the different levels of muscle structure,...Ch. 12 - Define the terms motor unit and innervation ratio...Ch. 12 - Using the concept of recruitment, explain how...Ch. 12 - With reference to the sliding filament theory,...Ch. 12 - Prob. 3bCPCh. 12 - Describe a cycle of cross-bridge activity during...Ch. 12 - Prob. 4bCPCh. 12 - Use a flowchart to show the sequence of events...Ch. 12 - Prob. 5bCP
Ch. 12 - Explain how graded contractions and smooth,...Ch. 12 - Prob. 6bCPCh. 12 - Prob. 7aCPCh. 12 - Describe the relationship between the resting...Ch. 12 - Prob. 8CPCh. 12 - Prob. 9CPCh. 12 - Explain the different causes of muscle fatigue...Ch. 12 - Prob. 11CPCh. 12 - Prob. 12aCPCh. 12 - Describe all of the events that occur from the...Ch. 12 - Prob. 13CPCh. 12 - Explain the significance of reciprocal innervation...Ch. 12 - Describe the functions of gamma motor neurons and...Ch. 12 - Explain how cardiac muscle differs from skeletal...Ch. 12 - Contrast the structure of a smooth muscle cell...Ch. 12 - Distinguish between single-unit and multiunit...Ch. 12 - Describe the events by which depolarization of a...Ch. 12 - Prob. 1RACh. 12 - Prob. 2RACh. 12 - Prob. 3RACh. 12 - Prob. 4RACh. 12 - Prob. 5RACh. 12 - Prob. 6RACh. 12 - Prob. 7RACh. 12 - Electrical excitation of a muscle fiber most...Ch. 12 - The energy for muscle contraction is most directly...Ch. 12 - Prob. 10RACh. 12 - Prob. 11RACh. 12 - Prob. 12RACh. 12 - Which of these types of muscle cells are not...Ch. 12 - Prob. 14RACh. 12 - In an isotonic muscle contraction,...Ch. 12 - Prob. 16RACh. 12 - Prob. 17RACh. 12 - Prob. 18RACh. 12 - Using the concept of motor units, explain how...Ch. 12 - Prob. 20RACh. 12 - Explain why the myosin heads don't bind to the...Ch. 12 - Using the sliding filament theory of contraction,...Ch. 12 - Prob. 23RACh. 12 - Prob. 24RACh. 12 - Prob. 25RACh. 12 - What changes occur in muscle metabolism as the...Ch. 12 - Prob. 27RACh. 12 - Compare cardiac muscle, single-unit smooth muscle,...Ch. 12 - Your friend eats huge helpings or pasta for two...Ch. 12 - Prob. 30RACh. 12 - Prob. 31RACh. 12 - How is electrical excitation of a skeletal muscle...Ch. 12 - Prob. 33RACh. 12 - Prob. 34RACh. 12 - Prob. 35RACh. 12 - Prob. 36RACh. 12 - Refer to figure 12.22 to answer the following...Ch. 12 - Refer to figure 12.22 to answer the following...Ch. 12 - Prob. 39RACh. 12 - Refer to figure 12.22 to answer the following...
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- During muscle contraction, some energy is supplied from creatine phosphate. Which of the following events occurs during the breakdown of creatine phosphate? Question 6 options: a ATP molecules breakdown producing ADP + P groups. b ATP molecules are formed when P groups are bonded to ADP. c ADP molecules break down producing AMP + P groups. d ADP molecules are formed when P groups are bonded to AMParrow_forwardWhen ATP levels return to normal after intense muscle activity, is creatine predominantly phosphorylated or unphosphorylated? Draw your answer, phosphorylated or unphosphorylated creatine. I know it would be phosphortlated, but what would the correct way to draw it?arrow_forwardThe role of creatine phosphate in muscle cells is to: provide energy for muscles during extended physical activity (greater than 20 minutes) split glucose in two accept electrons "recharge" spent ATP in the first several seconds of a muscle contraction shuttle H atoms to the ETCarrow_forward
- Why is adenosine triphosphate (ATP) used for muscle contraction?arrow_forwardSkeletal muscle has several distinct fiber types. Type I is used primarily for aerobic activity, whereas type IIb is specialized for short, intense bursts of activity. How could you distinguish between these types of muscle fiber if you viewed them with an electron microscope?arrow_forwardSkeletal muscle has several distinct fiber types. Type I is used primarily for aerobic activity, whereas type II b is specialized for short, intense bursts of activity. How could you distinguish between these types of muscle fiber if you viewed them with an electron microscope?arrow_forward
- What are two roles of ATP during muscle contraction?arrow_forwardThe 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_forwardIn a long period of intense exercise, why does muscle generate ATP anaerobically at first and then switch to aerobicrespiration?arrow_forward
- How do muscles convert the chemical energy of ATP into force and movement during a contraction?arrow_forwardWhat are three functions of ATP in muscle contraction?arrow_forwardSkeletal muscle fibres are very metabolically active and are adapted to create a lot of ATP from aerobic cellular respiration. Additionally, cells require other things to stay alive. Explain how the following three organ systems contribute to allowing a muscle cell to carry out its roles: a) Respiratory system b) Cardiovascular system c) Gastrointestinal system asap please.arrow_forward
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