What happens in a muscle twitch? a. Myosin grabs a thick myofilament. b. Sarcomeres shorten during the contraction phase. c. ATP is put back in the sarcoplasmic reticulum during the refractory phase. d. A threshold stimulus must be reached before anything will happen. e. Thin myofilaments are pulled toward the center of a sarcomere.
What happens in a muscle twitch? a. Myosin grabs a thick myofilament. b. Sarcomeres shorten during the contraction phase. c. ATP is put back in the sarcoplasmic reticulum during the refractory phase. d. A threshold stimulus must be reached before anything will happen. e. Thin myofilaments are pulled toward the center of a sarcomere.
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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What happens in a muscle twitch?
a. Myosin grabs a thick myofilament.
b. Sarcomeres shorten during the contraction phase.
c. ATP is put back in the sarcoplasmic reticulum during the refractory phase.
d. A threshold stimulus must be reached before anything will happen.
e. Thin myofilaments are pulled toward the center of a sarcomere.
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