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 19RQ
Dmg X blocks ATP regeneration from ADP and phosphate. How will muscle cells respond to this ding?
- by absorbing ATP from the bloodstream
- by using ADP as an energy source
- by using glycogen as an energy source
- none of the above
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Drug X blocks ATP regeneration from ADP and phosphate. How will muscle cells respond to this drug?a. by absorbing ATP from the bloodstreamb. by using ADP as an energy sourcec. by using glycogen as an energy sourced. none of the above
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OHyperexcitability of somatic motor neurons (secreting too much Ach)
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O Myasthenia Gravis, in which antibodies block Ach receptors at the motor end plate, preventing Ach
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O Hypocalcemia, in which the calcium pumps of the sarcoplasmic reticulum are unable to keep Ca2+
inside the SR (allowing Ca2+ to leak into the cytoplasm)
If you were able to control fatigue in the muscle cell experimentally such that you only exposed the muscle to high levels of Pi and no other metabolites, what would you observe?
A decline in force without much change in velocity
A decline in velocity without much change in force
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A decline in both force and velocity
An increased affinity of Ca2+ for troponin
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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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
- Please helparrow_forwardIn order to study and understand muscle diseases, one needs to have a good understanding of normal muscle function. Briefly outline the process of cross-bridge cycling in muscle contraction. Be sure to highlight the role of Ca2+ and ATP/ADP in the process.arrow_forwardExplain three reasons why artificial muscle are made from conductive polymer? Please give details about the type of conductive polymer used for artificial muscle?arrow_forward
- Which of the following statements is true about the control of muscle glycogen phosphorylase? a) It is activated by phosphorylation by an active phosphorylase kinase b) It is allosterically activated by ATP c) It is allosterically activated by CAMP d) Normally it exists in active formarrow_forwardctions in smooth muscle cells depend on which one of the following activation steps? Ca2+-activated phosphorylation of myosin-II Ca²+ binding to troponin GTP binding to myosin-II Actin polymerization (b) (c) (d) Explain:arrow_forwardWhich of the following statements describes smooth muscle cells? They are resistant to fatigue. They have a rapid onset of contractions. They cannot exhibit tetanus. They primarily use anaerobic metabolism.arrow_forward
- 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 fibers contract for extended periods.arrow_forwardAll the enzymes listed below catalyze a reaction in the skeletal muscle. For an Olympic sprinter, which ones would be considered relevant during the running of a 100m sprint (select all that apply)? O glycogen phosphorylase O pyruvate kinase glycogen synthase O lactate dehydrogenase O adenylate kinase O pyruvate dehydrogenase O creatine kinasearrow_forwardWhat type of regulation would be expected when anaerobic metabolism is occurring in the muscle? Select all that apply. O Activation of pyruvate dehydrogenase kinase O Increased levels of calcium to activate pyruvate dehydrogenase phosphatase O Phosphorylation of pyruvate dehydrogenase O Inhibition of pyruvate dehydrogenase complex O Increased levels of NADH to activate citrate synthase O Increased levels of NADH to inhibit alpha-ketogluterate dehydrogenase complex O Increased levels of acetyl CoA to activate pyruvate carboxylase for gluconeogenesisarrow_forward
- Discuss the similarities and differences by which Ca2+ activity is involved in initiating muscle contraction in skeletal versus smooth muscle fibers (hint: include Ca2+ sources, proteins it binds to, and signaling cascade it activates leading to contraction).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_forwardMuscle contraction involves a protein conformational change called the power stroke. Where ultimately does the energy come from that allows a series of conformational changes involved in the power stroke? O Ca2+ O ATP hydrolysis O Actin polymerization O GTP hydrolysisarrow_forward
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