After death a condition called rigor mortis develops due to a sarcoplasmic increase in calcium levels along with a decreased level of
A) ATP.
B) ADP.
C) sodium.
D) potassium.
E) myoglobin.

Question

Quizplus · Accepted Answer

Rigor mortis is caused by a lack of ATP in muscle fibers, which is necessary for the release of actin and myosin cross-bridges. The increase in calcium levels and decrease in ATP cause the muscles to contract and become stiff. The other options (B, C, D, and E) are not directly involved in the development of rigor mortis.

After Death a Condition Called Rigor Mortis Develops Due to a Sarcoplasmic