Q. Approximately how many times each day, do our heart valves open and close normally? (Solved)
1. 10,000 times
2. 1,00,000 times
3. 1,50,000 times
4. 2,00,000 times
- b. 1,00,000 times
1. 10,000 times
2. 1,00,000 times
3. 1,50,000 times
4. 2,00,000 times