- Organ Name: Heart
- Organ Location: Middle of the chest
- Organ System: Circulatory system
- Organ Purpose: Pump blood throughout the body
- Organ Weight: Between 9 and 12 ounces
- Organ Length: 3.5 inches (average)
26 Heart Facts for Kids
- The human heart is the main component of the human body’s circulatory system.
- The heart pumps blood through the human body via blood vessels.
- The heart is in the middle compartment of the chest, between the lungs.
- A healthy, adult human heart is about the size of a human fist.
- A healthy, adult human heart will weigh between 9 and 12 ounces.
- A healthy, adult human heart is on average 5 inches in length, 3.5 inches wide and about 2.5 inches thick.
- The human heart is made up of four chambers.
- The four chambers of the human heart are the left atria, the right atria, the left ventricle and the right ventricle.
- The two atria chambers are the upper receiving chambers.
- The left atria chamber brings in oxygenated blood from the lungs, while the right atria chamber brings in deoxygenated blood from the venae cavae veins.
- The two ventricle chambers are the lower discharging chambers.
- The left ventricle chamber pumps oxygenated blood into the circulatory system, while the right ventricle chamber pumps deoxygenated blood into the lungs.
- The human heart beats around 100,000 times a day or pumping around 2,000 gallons of blood per day.
- Your heart rate, also known as your pulse, is how many times your heart beats per minute.
- When a doctor or nurse checks your pulse, they’re checking your current bpm.
- The acronym “bpm” stands for beats per minute. This is how many times your heart beats in a 60 second period.
- The phrase “resting heart rate” refers to your bpm when you’re not exercising and calm.
- The resting heart rate of an average adult is between 60 to 100 bpm.
- The resting heart rate of an infant can be as high as 129 bpm.
- The study of heart disorders and diseases is called cardiology, and someone who studies cardiology is called a cardiologist.
- A heart transplant (cardiac transplant) is when the heart from one human (organ donor) is removed and surgically placed into another human (transplant recipient).
- There are an estimated 3,500 heart transplants worldwide each year and the average person survives up to 15 years.
- Heart disease is the number one cause of deaths worldwide according to World Health Organization (WHO).
- A heart attack is a serious condition in which an artery that is supplying blood to your heart becomes blocked.
- Cardiovascular exercise, also known simply as cardio, is a great way to keep your heart healthy and prevent many different types of heart disease.
- A few examples of cardiovascular exercise are brisk walking, riding a bike, running and swimming.
Pictures of the Human Heart
A diagram of the main arteries of the human heart.
An MRI (Magnetic Resonance Image) of the human heart.
Credit: University of Virginia
An illustration of the heart in the human body.
Additional Resources on the Human Heart
- Human Heart Facts and Information – Research more facts and information about the human heart on the Live Science website.
- Heart Anatomy Pictures – View some illustrative pictures of the heart’s anatomical structure.
- Diagram of the Human Heart – View a colorful diagram of the human heart made by the Univeristy of Washington.
- Heart – Britannica – Find more awesome facts about the human heart on the Britannica website.