The heart is pumping blood tool, found in the chest cavity, have parts:
a. Heart wall consists of three layers: Pericardium (the lining of the heart wrappers), Myocardium (heart muscle), endocardial (membrane lining the heart room).
b. The room heart consists of 4 rooms, two pancake (atria) of the right and left, and the two chambers (ventricles) of the right and left. At the unborn baby, between the right atrium and left the porch there is a hole (foramen ovale).
Atrium is the room where the influx of blood from a vein (vein booth). The right atrium receives blood from the vena cava and superior vena cava inverior. While the left atrium receives blood from the pulmonary veins (pulmonary vein chamber) containing oxygen-rich blood.
Vertical is the heart that pumps blood meinggalkan heart. From the right ventricle CO2-rich blood is pumped to the lungs. And arterial blood from the left ventricle (rich in O2) is pumped throughout the body. Therefore, the myocardium of the left ventricle of the heart muscle is thickest.
c. Heart valves to keep the blood flow in the direction of the heart is equipped with a valve (valvula).
1 Between the right atrium and right ventricle are three leafed valve called the tricuspid valvula.
2 Between the left atrium and left ventricle there is a valve called the leafy two bicuspid valvula.
3 At the base of the stem of rice (the aorta) are crescent-shaped valve spring called valvula Lunair.
Heart muscles get food and oxygen from the blood which is transported by the pulse canopy (coronary arteries). Blockage of the arteries is called coronariasis canopy.
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