What occurs when the sarcomere length of skeletal muscle is reduced beyond the length w optimum force is developed? The amount of calcium released by the sarcoplasmic reticulum is reduced as length increases. The thin filaments are pulled away from one another, thereby reducing their ability to interact with The thick filaments are pulled away from one another, thereby reducing their ability to interact with The thick filaments overlap one another, thereby reducing their ability to interact with actin. The thin filaments overlap one another with myosin bumping into the Z-line, thereby causing the fo generated by cross bridges to be exerted on the sarcomere itself rather than transmitted to the end muscle fiber.

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Question 33

What occurs when the sarcomere length of skeletal muscle is reduced beyond the length w optimum force is developed?

  1. The amount of calcium released by the sarcoplasmic reticulum is reduced as length increases.
  2. The thin filaments are pulled away from one another, thereby reducing their ability to interact with
  3. The thick filaments are pulled away from one another, thereby reducing their ability to interact with
  4. The thick filaments overlap one another, thereby reducing their ability to interact with actin.
  5. The thin filaments overlap one another with myosin bumping into the Z-line, thereby causing the fo generated by cross bridges to be exerted on the sarcomere itself rather than transmitted to the end muscle fiber. Previous

Question 34

During exercise, CO2 produced by muscle cells causes hyperemia. This is an example of

  1. Vasodilation; active
  2. Vasodilation; reactive
  3. Vasoconstriction : active
  4. Vasoconstriction: reactive
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