Moderate
Rigor mortis results after death is due to________________?
Correct answer: B. Failure of ATP supply
- A. Failure of acetylcholine to diffuse
- B. Failure of ATP supply
- C. Failure of break down of calcium bridges
- 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.
Last updated
Practise Cell and General Physiology
31 free Cell and General Physiology MCQs from Physiology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Physiology questions like this
Physiology is on 3 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.