Human Biology, 14 Edition

Published by McGraw-Hill Education
ISBN 10: 1-25924-574-8
ISBN 13: 978-1-25924-574-9

Chapter 13 - Engage - Page 282: 2

Answer

2a ATP is required for muscle relaxation. Rigor mortis sets in as ATP is depleted. Rapid cooling delays the onset of rigor mortis because cooling slows ATP depletion/deletion.

Work Step by Step

2b. Heat can accelerate the onset of rigor mortis; so can extreme exercise right before death-- which depletes ATP stores in the muscles.
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