After death, rigor mortis lasts until
A) ATP is produced.
B) T-tubules recapture calcium ions.
C) sodium ions are released by the sarcoplasmic reticulum.
D) sarcomeres lengthen.
E) myofilaments are broken down.

Question

Quizplus · Accepted Answer

Rigor mortis lasts until the myofilaments are broken down. This process occurs because, after death, the body stops producing ATP, which is necessary for muscle relaxation. As the cells begin to decompose, enzymes break down the myofilaments, leading to the relaxation of the muscles.

After Death, Rigor Mortis Lasts Until