Heart In Figures
- The heart must beat 70 times or so a minute regularly and steadily
- At normal state, the heart pumps out 4 – 5 liters of blood a minute
- The body contains more than 100 thousand kilometers of blood vessels.
How big is your heart?
Your heart is about the size of your clenched fist.
How many times should a heart beat?
The heart must beat around 70 times a minute regularly and steadily. That’s 700 000 times a week. If your heart beats less than 60 times a minute or more than 100 times a minute, that is not normal but it does not mean there’s something wrong with your heart. A healthy and fit person may have a slower heartbeat because his or her heart does not have to work hard to pump blood.
How many liters of blood does the heart pump?
Your heart pumps 4 to 5 liters of blood a minute. While doing your workout exercises, your blood can pump up to 24 liters a minute. For each heartbeat, your heart pumps about 70 ml of blood.
What’s in the blood that heart pumps?
Your blood is reach in oxygen and nutrients which are essential to the body — to every organ, every tissue, every cell, especially your brain. Blood with oxygen and nutrients keep your brain cells alive. Without oxygen, your brain cells die.
However, the blood also carries waste products such as carbon dioxide. That’s why you must not put too much toxins into your body.
What is the cardiovascular system?
Your cardiovascular system refers to your heart, veins, and arteries. Your blood vessels comprise your arteries, capillaries, and veins. Blood travels from the heart through the aorta (left side of your heart) to the arteries, then to the capillaries to the cells. From the cells, it travels through the veins back to the heart (right side), then to the lungs, then back to the heart again (left side).
What is the difference between arteries and veins?
The arteries carry oxygenated blood from the heart to the different parts of the body (except to the lungs) to nourish and supply them with oxygen. After it has done its job, the blood is deoxygenated. The veins carry the deoxygenated blood back to the heart. The heart pumps the blood to the lungs to be oxygenated or replenished with oxygen. The oxygenated blood goes back to the heart, then pumped out to the arteries. The circulation of the blood is a one-way traffic.
How long does blood travel in the body?
Blood circulates in our body in cycles. It takes a minute to complete one cycle – from heart to cells then back to heart, from heart to lungs, then back to heart before it flows to the cells again. There are more than 100 thousand kilometers (60 000 miles) of blood vessels in the body. That’s about 2.5 times the circumference of the earth. So, blood travels 100 thousand kilometers per minute.
What is that sound when you listen to your heart?
For every heartbeat, you hear two sounds — the opening and closing of the valves. The first sound is the snapping sound of the valve between the upper chambers (atria) and the lower chambers (ventricles). The second sound is the closing sound of the valve between the lower chambers and the arteries.
What are the common problems of the heart?
The most common problems of the heart are coronary artery disease, high blood pressure, irregular heart rhythms, heart valve problems, and heart defects.