Heart Dissection

Introduction In this investigation, the external and inner(a) structures of a sheeps intend was examined and identified by dissection. The heart is a muscle that pumps oxygenated environ line and nutrients finishedout the body. A sheeps heart has four house like most mammals. Two of those put up are receiving house called the mature and left atrium. The other two chambers are pumping chambers called the expert and left ventricle. The efficiency in the bout of derivation depends on the sequential experienceion 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 unconstipated ladder of lineage with the heart. The contractions occur one later on another(prenominal) to make a heartbeat. The many valves such as the tricuspidate and mitral valves control the flow of line of products from each chamber. affinity flo w through the heart starts when the right atrium takes the product line that flows in through the superior or inferior vena cava. The right atrium and therefore 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 pulmonic 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 ven tricle then contracts and forces the blood t! hrough the aorta, which provides the rest of the body with blood. Objectives Describe the appearance of the external and indispensable structures of a sheeps heart Name the structure and thing of a sheeps heart Materials The materials needed in this dissection implicate: 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 exigency to get a full essay, order it on our website: BestEssayCheap.com

If you want to get a full essay, visit our page: cheap essay