Rigor mortis results after death is due to________________?
Correct answer: C. Failure of ATP supply
- A. Failure of acetylcholine to diffuse
- B. Failure of break down of calcium bridges
- C. Failure of ATP supply
- D. None of the above
Explanation
After death, ATP production stops, so myosin heads cannot detach from actin and the muscles become rigid. Calcium pump failure also contributes by leaving calcium in the sarcoplasm, but ATP depletion is the key cause.
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