Anatomy & Physiology
1st Edition
ISBN: 9781938168130
Author: Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble
Publisher: OpenStax College
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Textbook Question
Chapter 10, Problem 23RQ
Which of the following statements is false?
- Slow fibers have a small network of capillar ies.
- Slow fibers contain the pigment myoglobin.
- Slow fibers contain a large number of mitochondria.
- Slow fiber’s contract for extended periods.
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Students have asked these similar questions
Which of the following statements is false?
Slow fibers have a small network of capillaries.
Slow fibers contain the myoglobin.
Slow fibers contain a large number of mitochondria.
Slow fibers contract for extended periods.
Slow-twitch (type I/red) fibers have a distinctive feature:
fatigue easily
relatively low quantities of glycogen
relatively low quantities of myoglobin
show a fast response
relatively low quantities of mitochondria
Compared to skeletal muscle, smooth muscle
None of the choices are correct
Has equal thick and thin filaments
Uses calcium from the extracellular fluid only
Has the same contractile and regulatory proteins.
Has much more thick filaments than thin filaments
Chapter 10 Solutions
Anatomy & Physiology
Ch. 10 - Watch this video...Ch. 10 - Every skeletal muscle fiber is supplied by a motor...Ch. 10 - The release of calcium ions initiates muscle...Ch. 10 - Muscle that has a striped appearance is described...Ch. 10 - Which element is important in directly Triggering...Ch. 10 - Which of the following properties is not common to...Ch. 10 - The correct order for the smallest to the largest...Ch. 10 - Depolarization of the sarcolemma means ________....Ch. 10 - In relaxed muscle, the myosin-binding site on...Ch. 10 - According to the sliding filament model, binding...
Ch. 10 - The cell membrane of a muscle fiber is called...Ch. 10 - Muscle relaxation occurs when ________. calcium...Ch. 10 - During muscle contraction, the cross-bridge...Ch. 10 - Thin and thick filaments are organized into...Ch. 10 - During which phase of a twitch in a muscle fiber...Ch. 10 - Muscle fatigue is caused by ________. buildup of...Ch. 10 - A sprinter would experience muscle fatigue sooner...Ch. 10 - What aspect of creatine phosphate allows it to...Ch. 10 - Dmg X blocks ATP regeneration from ADP and...Ch. 10 - The muscles of a professional sprinter are most...Ch. 10 - The muscles of a professional marathon runner are...Ch. 10 - Which of the following statements is true? Fast...Ch. 10 - Which of the following statements is false? Slow...Ch. 10 - Cardiac muscles differ from skeletal muscles in...Ch. 10 - If cardiac muscle cells were prevented from...Ch. 10 - Smooth muscles differ from skeletal and cardiac...Ch. 10 - Which of the following statements describes smooth...Ch. 10 - From which embryonic cell type does muscle tissue...Ch. 10 - Which cell type helps to repair injured muscle...Ch. 10 - Why is elasticity an important quality of muscle...Ch. 10 - What would happen to skeletal muscle if the...Ch. 10 - Describe how tendons facilitate body movement.Ch. 10 - What are the five primary functions of skeletal...Ch. 10 - What are the opposite roles of voltage-gated...Ch. 10 - How would muscle contractions be affected if...Ch. 10 - What causes the striated appearance of skeletal...Ch. 10 - How would muscle contractions be affected if ATP...Ch. 10 - Why does a motor unit of the eye have few muscle...Ch. 10 - What factors contribute to the amount of tension...Ch. 10 - Why do muscle cells use creatine phosphate instead...Ch. 10 - Is aerobic respiration more or less efficient than...Ch. 10 - What changes occur at the cellular level in...Ch. 10 - What changes occur at the cellular level in...Ch. 10 - What would be the drawback of cardiac contractions...Ch. 10 - How are cardiac muscle cells similar to and...Ch. 10 - Why can smooth muscles conn act over a wider range...Ch. 10 - Describe the differences between single-unit...Ch. 10 - Why is muscle that has sustained significant...Ch. 10 - Which muscle type(s) (skeletal, smooth, or...
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- Depolarization of the sarcolemma means ________. the inside of the membrane has become Less negative as sodium ions accumulate the outside of the membrane has become less negative as sodium ions accumulate the inside of the membrane has become more negative as sodium ions accumulate the sarcolemma has completely lost any electrical chargearrow_forwardSkeletal muscle contraction requires _________. a. calcium ions b. ATP c. arrival of a nerve impulse d. all of the abovearrow_forwardFigure 38.37 Which of the following statements about muscle contraction is true? The power stroke occurs when ATP is hydrolyzed to ADP and phosphate. The power stroke occurs when ADP and phosphate dissociate from the myosin head. The power stroke occurs when ADP and phosphate dissociate from the actin active site. The power stroke occurs when Ca2+ binds the calcium head.arrow_forward
- Nerve impulses first stimulate a skeletal muscle fiber at _______. a. T tubules b. sarcomeres c. neuromuscular junctions d. actin binding sitesarrow_forwardThe mechanism of contraction in smooth muscle is different from skeletal muscle in that the site of calcium binding differs ATP energizes the sliding process actin and myosin interact by the sliding filament mechanism the trigger for contraction is a rise in intracellular calcium the thick filaments have fewer myosin headsarrow_forwardHumming birds and rattlesnakes can contract and relax skeletal muscle very quickly, i.e. in 10-20 milliseconds. Which of the following steps must they have shortened to speed up contractions? more brief neuronal action potentials more brief skeletal muscle attion potentials shorter duration of calcium in the cytosol all of the abovearrow_forward
- Which of the following is NOT correct regarding muscle contraction? O Ca++ in the sarcoplasm returns to the nucleus to be stored ATP needs to be present for muscle relaxation A neurotransmitter is released at the neuromuscular junction ATP needs to be present for muscle contractionarrow_forwardWhich of the following statements is true? Fast glycolytic fibers have a small diameter. Fast glycolytic fibers contain loosely packed myofibrils. Fast glycolytic fibers have large glycogen reserves. Fast glycolytic fibers have many mitochondria.arrow_forwardSkeletal muscle will be released in its contracted (rigor) state when: Group of answer choices ATP is hydrolyzed into forming ADP and inorganic phosphate. ATP binds to the myosin head. ADP is dissociated from the myosin head. ATP binds to the actin G-molecule.arrow_forward
- Which of the following is FALSE for generating muscular tetanus? The plasma membrane remains continuously depolarized. Calcium accumulates in the cytosol.arrow_forwardWhich of the following is NOT true of fast oxidative skeletal muscle fibers? O All of the above describe fast oxidative muscle fibers There muscle fibers are surrounded by a high number of capillaries There muscle fibers contain many mitochondria There fibers can be converted to slow oxidative fibers during periods of no training There is a high myoglobin content in these types of fibersarrow_forwardWhich of the following statements regarding contraction of skeletal muscle cells is NOT true: (more than one answer may be correct) the myofibrils shorten the thick and thin filaments slide past one another the thin filaments shorten the sarcomeres shorten the thick filaments shortenarrow_forward
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