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Sheep Heart Structure Lab Report

Decent Essays

Purpose:
To investigate the structure of the heart.
Introduction:
Every day, the approximately 5 liters of blood in your body travel many times through about 97,000 kilometers of blood vessels that branch and cross, linking the cells of our organs and body parts. From the hard-working heart, to our thickest arteries, to capillaries so thin that they can’t be seen with the naked eye, the cardiovascular system is one of the most important systems in our body.
The central organ of the Cardiovascular System is the Heart, the muscular organ pumps blood through an intricate network of Blood Vessels to all parts of the body. The heart sends blood around the body. The blood provides the body with the oxygen and nutrients it needs. It also carries …show more content…

Mammals have four-chambered hearts and double circulation. The double-loop circulation is similar to amphibians and reptiles, but the oxygen-rich blood is completely separated from oxygen-poor blood. The left side of the heart handles only oxygenated blood, and the right side receives and pumps only deoxygenated blood. With no mixing of the two kinds of blood, and with a double circulation, delivery of oxygen to all parts of the body is enhanced. The gross anatomy of the human heart is the same as the sheep’s heart that was dissected. The heart is located, between the lungs, and behind the sternum. At least one blood vessel attaches to each of the chambers. It usually beats from 60 to 100 times per minute, but can go much faster when it needs to. It beats about 100,000 times a day, more than 30 million times per year, and about 2.5 billion times in a 70-year lifetime.
Problems with the cardiovascular system are common — more than a sixth of Australians have some type of cardiac problem. Cardiovascular problems affect all age groups. Heart and circulatory problems are grouped into two categories: congenital, which means the problems were present at birth, and acquired, which means that the problems developed some time after

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