Heart Presentation By: Mark Gensimore

Parts of the Heart Let’s see the different parts that make up the heart

There are four chambers in the heart Chambers of the Heart There are four chambers in the heart The top two chambers are called Atriums (left and right) The bottom two chambers are called ventricles ( left and right)

There are three major Veins in the heart Veins of the Heart There are three major Veins in the heart The Superior Vena Cava brings blood from the top part of your body

Veins of the Heart The Inferior Vena Cava brings blood from the bottom part of your body The Pulmonary Vein returns blood to the heart after it receives fresh oxygenated blood from the lungs

There are two main arteries in the heart Arteries of the Heart There are two main arteries in the heart The Aorta is the artery that takes blood to all parts of the body The Pulmonary Artery takes used blood from the heart to the lungs for oxygen

There are four valves in the heart Valves of the Heart There are four valves in the heart Valves in the heart act like doors when they let blood pass through the chambers and into the arteries The valves close so blood cannot go backwards This way blood only travels in one direction

Pumping Blood Let’s see how the heart pumps blood to all parts of the body.

Blood Entering the heart When used blood returns from the body it enters the heart in the Right Atrium through the Superior and Inferior Vena Cava

Blood Entering the Heart Fresh oxygenated blood enters the Left Atrium through the Pulmonary Vein when returning from the lungs

Blood Changing Chambers The Atriums squeeze the blood through the two valves down into the Left and Right Ventricles When these valves close blood cannot flow back into the Atriums

Blood Leaving the Heart The Right Ventricle squeezes blood through a valve and into the Pulmonary Vein This vein takes blood to the lungs to get oxygen and get rid of carbon dioxide

Blood Leaving the Heart At the same time the Left Ventricle squeezes oxygenated blood through a valve and into the Aorta This artery takes oxygenated blood to all parts of the body

Thank you for your participation! Heart in Action If your connected to the internet click on the picture of the heart to see the heart at work Thank you for your participation!