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Learn Human body: cardiovascular system

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- Hi!. This is the cardiovascular system! - I have a question for you. Go ahead! What is the cardiovascular system? The cardiovascular system includes the heart and the blood vessels. The heart pumps blood and the blood vessels deliver it throughout the body. At the center of the cardiovascular system is the heart. It’s a muscle about the size of your fist. It’s located behind your rib cage and a little to the left of the middle of your chest. The ribs protect your heart. That is why whenever you fall down or get hit in the chest your heart is safe. Your heart pumps the blood through the body, through arteries and veins. These are like little little roads in your body. The blood carries the good, nice oxygen and nutrients that the body needs and carries away the dirty carbon dioxide and chemical wastes so that the body can get rid of them. You have reached the heart. Yeah! Mister Heart, can you please tell me more about yourself. Sure, let me get it to my operator. The heart is divided into the right half and the left half. These two halves of the heart act as every pump each is in charge of pumping blood through one of the two blood vessel circuits The atrium on both the sides of the heart receives incoming blood first and then it sends the blood down to the ventricles to be pumped out. The right side of your heart receives oxygen poor blood from the body and sends it to the lungs to get rid of the carbon dioxide and pick up the good oxygen. The left side of your heart receives oxygen rich blood from the lungs and pumps it back into your body. The heart depends on 4 valves to move the blood in your heart in the right direction. The sound your heart makes … comes from the sound of these valves opening and closing. Blood pressure is the measurement of the force of the blood as it flows through the arteries of the cardiovascular system. The top number is called the systolic pressure and it is a pressure found in the arteries when the heart muscles are squeezing blood out of the heart. The bottom number is the diastolic pressure which is the pressure of the blood as it comes to flow through the arteries betwen two heart beats Your heart is the most important organ in your body. You cannot live without a heart and that is why you need to take care of your heart and keep it really really healthy. These are the main thinghs that you can do to keep your heart healthy. Eat healthy foods. Exercise everyday and Live tobacco free. Bye!

Video Details

Duration: 4 minutes and 26 seconds
Country: Spain
Language: English
Views: 3,167
Posted by: mjosferreiro on Jan 17, 2012

It explains how the cardiovascular system works

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