How Is Blood Pumped Throughout the Body

919 Words Feb 25th, 2013 4 Pages
Blood is pumped through the body by the heart by two different circuits, one of the circuits in the systemic circuit and the second circuit is the pulmonary circuit.

The system circuit, starts via the left atrium and passing the mistral valve down into the left ventricle. The ventricle will then contract shortly after the atria have started relaxing and followed by the closing of the atrioventricular valves, so blood does not back wash into the atrium. Pressure will becoming higher in the left ventricle allowing ventricular systole 's second phase to begin by forcing blood through the aortic semi lunar valve up into the aorta so blood may reach the rest of the tissues in the body. Afterwards, the ventricles will becoming diastolic
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Two of the heart valves are the mitral (say: my-trul) valve and the tricuspid (say: try-kus-pid) valve. They let blood flow from the atria to the ventricles. The other two are called the aortic (say: ay-or-tik) valve and pulmonary (say: pul-muh-ner-ee) valve, and they 're in charge of controlling the flow as the blood leaves the heart. These valves all work to keep the blood flowing forward. They open up to let the blood move ahead, then they close quickly to keep the blood from flowing backward.

The right and left sides of your heart are divided by an internal wall of tissue called the septum. The area of the septum that divides the atria (the two upper chambers of your heart) is called the atrial or interatrial septum.

The area of the septum that divides the ventricles (the two lower chambers of your heart) is called the ventricular or interventricular septum.
Heart Chambers

The inside of your heart is divided into four chambers. The two upper chambers of your heart are called atria. The atria receive and collect blood. The two lower chambers of your heart are called ventricles. The ventricles pump blood out of your heart into the circulatory system to other parts of your
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