1. How many times does the human heart beat in a lifetime?
- A
1 billion times
- B
2 billion times
- C
2.5 billion times
- D
2.85 billion times
According to MSc. Dr. Doan Du Manh, member of the Vietnam Vascular Disease Association, your heart beats about 100,000 times a day and about 35 million times a year. The average life expectancy in the United States (as of 2022) is 77.5 years, according to a 2022 report from the Centers for Disease Control and Prevention. That means that in a person's lifetime, his or her heart will beat about 2.85 billion times.
2. Is the heart located in the left or right chest?
- A
Between the rib cage
- B
Left
The heart is a blood-filled muscle located in the left side of the chest. Because the heart is located on the left side of the rib cage, the left lung is slightly smaller to make room for the heart. The heart and other internal organs are protected by the rib cage.
- C
Right
3. How many chambers does the human heart have?
- A
1
- B
2
- C
3
- D
4
Through the structural anatomy of the heart, it is shown that the human heart has 4 chambers called 4 heart chambers. The two upper atria and the two lower ventricles communicate with each other through the atrioventricular opening. The right atrium communicates with the right ventricle through the tricuspid valve, which only allows blood to flow from the atrium to the ventricle. The left atrium communicates with the left ventricle through the mitral valve.
Source: https://vtcnews.vn/trai-tim-con-nguoi-dap-bao-nhieu-lan-trong-doi-ar907945.html
Comment (0)