Human Anatomy & Physiology (2nd Edition)
2nd Edition
ISBN: 9780134553511
Author: Erin C. Amerman
Publisher: PEARSON
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Textbook Question
Chapter 10, Problem 4CYU
Explain why cardiac muscle cells and some smooth muscle cells will continue to contract even when their nerve supply has been removed.
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Why would cardiac muscle cells and some smooth muscle cells.continue to contract
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Why would cardiac muscle cells and some smooth muscle cells continue to contract even when their nerve supply has been removed or severed?
Explain how cardiac muscle differs from skeletal muscle in its structure and regulation of contraction.
Chapter 10 Solutions
Human Anatomy & Physiology (2nd Edition)
Ch. 10.1 - What are the two types of striated muscle?Ch. 10.1 - Which two types of muscle are involuntary?Ch. 10.1 - What is the basic function of all types of muscle...Ch. 10.1 - 4. What five properties are common to all muscle...Ch. 10.1 - Prob. 5QCCh. 10.2 - Prob. 1QCCh. 10.2 - How are the terminal cisternae related to the...Ch. 10.2 - Prob. 3QCCh. 10.2 - How does the arrangement of myofilaments produce...Ch. 10.2 - 5. Describe the structure of a sarcomere. What is...
Ch. 10.2 - Prob. 6QCCh. 10.2 - Describe the structures of thin filaments, thick...Ch. 10.2 - Prob. 8QCCh. 10.3 - What is the resting membrane potential?Ch. 10.3 - Prob. 2QCCh. 10.3 - 3. How do the electrochemical gradients for...Ch. 10.3 - What two factors generate the resting membrane...Ch. 10.3 - What is an action potential?Ch. 10.3 - What happens during the two phases of an action...Ch. 10.4 - Prob. 1QCCh. 10.4 - Prob. 2QCCh. 10.4 - 3. How does excitation from a neuron trigger...Ch. 10.4 - How are excitation and contraction coupled?Ch. 10.4 - What are the steps of the crossbridge cycle?Ch. 10.4 - Prob. 6QCCh. 10.5 - What are the two immediate energy sources for...Ch. 10.5 - How long can these immediate energy sources fuel...Ch. 10.5 - Prob. 3QCCh. 10.5 - Prob. 4QCCh. 10.5 - Prob. 5QCCh. 10.5 - Prob. 6QCCh. 10.5 - Prob. 7QCCh. 10.6 - What is a twitch contraction?Ch. 10.6 - What are the phases of a twitch contraction?Ch. 10.6 - How does the timing of a stimulus impact the...Ch. 10.6 - 4. How do fused and unfused tetanus differ?
Ch. 10.6 - 5. At what length will a sarcomere be able to...Ch. 10.6 - How do type I and type II muscle fibers differ?Ch. 10.7 - Prob. 1QCCh. 10.7 - 2. Explain the process of recruitment.
Ch. 10.7 - Prob. 3QCCh. 10.7 - 4. How do isotonic concentric, isotonic...Ch. 10.8 - Prob. 1QCCh. 10.8 - Prob. 2QCCh. 10.8 - Prob. 3QCCh. 10.8 - What conditions does excess postexercise oxygen...Ch. 10 - Mark the following statements as true or false. If...Ch. 10 - How does a skeletal muscle fiber differ...Ch. 10 - Thick filaments are composed of the protein a....Ch. 10 - Prob. 4CYRCh. 10 - Prob. 5CYRCh. 10 - Mark the following statements as true or false. If...Ch. 10 - Prob. 7CYRCh. 10 - 8. Order the following events of excitation and...Ch. 10 - 9. Which of the following statements accurately...Ch. 10 - 10. A muscle fiber relaxes when:
a. the...Ch. 10 - Which of the following energy sources would...Ch. 10 - 12. Mark the following statements as true or...Ch. 10 - Prob. 13CYRCh. 10 - 14. Muscle tone is:
a. the result of voluntary...Ch. 10 - Prob. 15CYRCh. 10 - Which of the following is not likely to result...Ch. 10 - Which of the following factors is/are responsible...Ch. 10 - 18. What is thought to cause excess postexercise...Ch. 10 - Prob. 19CYRCh. 10 - 20. Which of the following best describes...Ch. 10 - Mark the following statements as true for smooth...Ch. 10 - Prob. 1CYUCh. 10 - Prob. 2CYUCh. 10 - 3. The drug neostigmine blocks the activity of...Ch. 10 - Explain why cardiac muscle cells and some smooth...Ch. 10 - Prob. 1AYKACh. 10 - Prob. 2AYKACh. 10 - Prob. 3AYKACh. 10 - Prob. 4AYKACh. 10 - Prob. 5AYKBCh. 10 - Prob. 6AYKB
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- Explain why (a) calcium ions and (b) ACh are vital for muscle contraction.arrow_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_forwardExplain why it is important for cardiac muscle to havelonger-lasting contractions than skeletal muscle.arrow_forward
- Describe the events by which depolarization of a smooth muscle cell results in contraction and explain why smooth muscle contractions are slow and sustained.arrow_forwardDescribe the types of skeletal muscle fibers based on: Structural differences (chemical and physical) Contraction speed and resistance to fatigue Type of respirationarrow_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
- Explain why cardiac muscle cannot undergo tetanic contractions?arrow_forwardIn cardiac muscle, which ion serves both to depolarize the cells and as the essential link to myocyte contraction (the troponin/tropomyosin part)? a-Na+ b-Ca+ c-Ca2+ d-Cl-arrow_forwardExplain the concept of tetany in skeletal muscle. Can cardiac muscle be tetanized? Explain the physiological significance of your answer.arrow_forward
- Explain the variation in diameter of skeletal muscle fibers and what type of muscle tissue undergoes growth by an increase in the number of cellsarrow_forwardA skeletal muscle can be stimulated, under laboratory conditions, with a supramaximal stimulus. Is it possible for the muscle to respond with a supramaximal contraction? Explainarrow_forward
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