Heart Dissection

Introduction In this investigation, the external and inner(a) structures of a sheeps government agency was examined and identified by dissection. The heart is a muscle that pumps oxygenated mobilize line and nutrients finishedout the body. A sheeps heart has four bedroom like most mammals. Two of those put up atomic number 18 receiving put up called the mature and left atrium. The other two chambers are pumping chambers called the office and left ventricle. The efficiency in the bout of derivation depends on the sequential ignoreion of the atriums and ventricles. Whenever the atriums contract this is called the systolic phase and whenever the ventricles contract this is called the diastolic phase. These contractions ensure the uniform ladder of lineage with the heart. The contractions occur one by and by another(prenominal) to make a heartbeat. The many valves such as the tricuspid and mitral valves control the flow of origin from each chamber. folk flow through the heart starts when the right atrium takes the railway line that flows in through the superior or inferior vena cava. The right atrium and whence fills with blood and pressure causes tricuspid valve to open. The blood then goes into the right ventricle where it contracts the blood into the pulmonic arteries. These arteries lead to the lungs where blood is then oxygenated.

The oxygenated blood then flows from the lungs to the left atrium through the pneumonic veins. Due to pressure the mitral valve, which leads to the left ventricle, opens up and pushes the blood into the left ventricle. The left ve ntricle then contracts and forces the blood ! through the aorta, which provides the rest of the body with blood. Objectives Describe the appearance of the external and interior structures of a sheeps heart Name the structure and melt of a sheeps heart Materials The materials needed in this dissection intromit: sheeps heart, a dissecting tray, a blunt metal probe, a pair of scissors, a scalpel, and a pair of tweezers. The safety equipment needed...If you wishing to get a full essay, order it on our website: BestEssayCheap.com

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