Alter death, calcium pumps no longer fünction and the calcium ion concentration of muscle fiber cytoplasm increases. The result is rigor mortis-a state of postmor- tem muscle contraction. Explain why this contraction 2. occurs and why it ends only when myosin heads begin to break down.

Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN:9781305073951
Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
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Chapter35: Structural Support And Movement
Section: Chapter Questions
Problem 2CT: After death, calcium pumps no longer function and the calcium ion concentration of muscle fiber...
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Explain how pyruvate can be used to produce ATP.
2. After death, calcium pumps no longer function and the
calcium ion concentration of muscle fiber cytoplasm
increases. The result is rigor mortis-a state of postmor-
tem muscle contraction. Explain why this contraction
occurs and why it ends only when myosin heads begin to
break down.
Transcribed Image Text:Explain how pyruvate can be used to produce ATP. 2. After death, calcium pumps no longer function and the calcium ion concentration of muscle fiber cytoplasm increases. The result is rigor mortis-a state of postmor- tem muscle contraction. Explain why this contraction occurs and why it ends only when myosin heads begin to break down.
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