The firmness of rigor mortis ___. A.can be reduced by manipulation of the affected muscles and extremities B.will be removed by the application of heat to the muscles C.can only be released by the passage of time D.None of the above

Normally the muscles of the body remain in the contracted state until ATP binds to myosin, releasing the myosin and actin filaments from one another. As there is no metabolism in the dead body no ATP is released so actin and myosin remains entangled to form a cross Bridge. Unable to release contraction, all the muscles of the body remain tense, causing rigor mortis.C. can only be released by the passage of time Rigor mortis generally peaks at 12 hours, and dissipates after 48 hours. Thus with passage of time rigor mortis is automatically released by proteolytic enzymes within the muscle cells disrupting the myosin/actin units. Warm conditions that is applying heat speeds up the onset and pace of rigor mortis by providing a hospitable environment for the bacteria and processes that cause decay.

Answered: The firmness of rigor mortis ___.…

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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The firmness of rigor mortis ___.

	A.	can be reduced by manipulation of the affected muscles and extremities
	B.	will be removed by the application of heat to the muscles
	C.	can only be released by the passage of time
	D.	None of the above