Heart

1.The pump is encased in three protective beds. The forther(prenominal) layer the pericardium is consisting of two layers parietal and visceral which keeps the cheek from stretching and the some other one is a thinner membrane that forms a ternary layer around the tone. Between these layers is a gnomish union of fluid called pericardial fluid that gives the layers a non-stick shape up that reduces friction when the heart beats. While the pericardium forms the outer layer of the heart, the myocardium forms the poise centre layer and the endocardium the innermost layer. The muscular myocardium is the thickest layer and is accountable for the hearts pumping action. The endocardium is the smooth lining of the heart and covers the valves The heart is sh ared into four chamber. The two bottom chambers are the left(a) hand and even off ventricle which contains trabecular carneae that is part of the semiconductive arranging of the heart. On the other hand, the two upper chambers are the left and right atrium which receives blood from major veins.

In addition, the septum separates the hearts left and right side The plat likewise shows the blood flow. The deoxygenated blood (db) returns to the heart, entering either by means of the tiptop vena cava or the inferior vena cava. The db and wherefore enters the right atrium then flows by means of the tricuspid valve into the right ventricle. It is then pumped through the pulmonary valve into the pulmonary artery to the lungs where its picks up the oxygen. The blood returns to the heart via pulmonary vein, enters the left atrium, descends through the mitral valve and into the left ventricle. Ther e it is pumped through the aortic valve into! the aorta and out to the body.If you want to get a full essay, baseball club it on our website: OrderEssay.net

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