Sheep Heart Dissection Lab Report

The hearts function as a double pump that serves two circulations. The pulmonary pump in the right side of heart is provided for the gas exchange in the body, and the systemic circulation in the left side provides the functional blood supply to all body tissues. The functional blood to the heart is provided by the coronary arteries. Right coronary artery supplies the heart through the posterior interventricular and marginal artery branches; and the left coronary artery supplies the heart via anterior interventricular artery and the circumflex artery. The myocardium is drained by great, small, and middle cardiac veins which

The fetal pig heart and the sheep heart were very similar in structure. They both consist of two atria and two ventricles. The biggest difference noted between the fetal pig and the sheep hearts were the size. The sheep heart was larger than the pig, although the pig heart seemed to have thicker myocardial muscles.

In a normal human being the heart correctly functions by the blood first entering through the right atrium from the superior and inferior vena cava. This blood flow continues through the right atrioventricular valve into the right ventricle. The right ventricle contracts forcing the pulmonary valve to open leading blood flow through the pulmonary valve and into the pulmonary trunk. Blood is then distributed from the right and left pulmonary arteries to the lungs, where carbon dioxide is unloaded and oxygen is loaded into the blood. The blood is returned from the lungs to the left

R E V I E W S H E E T 30 Anatomy of the Heart

The heart is a very strong muscle that has one major job. The heart’s job is to pump blood throughout the entire body. The heart is made up of 4 chambers, and 4 valves. There is the right and left atrium, and a right and left ventricle. The atriums are the superior chambers, and the ventricles are inferior chambers. The left ventricle is the most important, because that is where the blood travels through to go to the aorta, and eventually the rest of the body (Taylor 2015).

Purpose: Sheep have a four-chambered heart, just like humans. By studying the anatomy of a sheep's heart, you can learn about how your own heart pumps blood through your body and keeps you alive!.

In this lab, we dissected a sheep heart. We observed the external characters of the heart including the arteries, veins, and apex of the heart. We identified the apex of the heart and we concluded that it was at the bottom point of the heart. We then started dissection of the

Meanwhile, the left receives the now oxygen rich blood that comes from the lungs and is then pumped through the arteries. However, this time the left ventricle receives the

On the right side of your heart, it is collecting and pumping blood to the lungs through the pulmonary arteries, in which your lungs are refreshing the blood with a new supply of oxygen, and removing any waste products (Heart Disease- Mayo Clinic). On the left side of your heart, it pumps more blood throughout the aorta ( the main artery), to supply tissues throughout the body with oxygen and nutrients( Heart Disease- Mayo Clinic).

This article will explore your heart's anatomy. We'll describe its exterior, including the arteries and veins that supply blood to the muscle. We'll also describe the organ's interior, including the chambers, valves, and blood flow. Lastly, you'll learn how its electrical system helps ensure its proper function.

Blood comes from the Superior and Inferior vena cava, into the right atrium. As the right atrium fills with blood, it contracts and the tricuspid valve opens and the blood pumps into the valve. When the right ventricle is full the tricuspid valve close to ensure blood moves in the right direction. The blood then moves to the right ventricle and into another valve called the Pulmonary valve. Then moves to the pulmonary artery and into the lungs. The blood moves into the lungs and picks up fresh oxygen. Then it returns to the left heart through the pulmonary veins to the left atrium. It passes through the mitral valve and enters the left ventricle. Oxygenated blood moves into the aortic valve and into the Aorta to reach all parts of the body ( heart.org).

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.

The heart has two sides, separated by an inner wall called the septum. The right side of the heart pumps blood to the lungs to pick up oxygen. The left side of the heart receives the oxygen-rich blood from the lungs and pumps it to the body. The heart has four chambers and four valves and is connected to various blood vessels. Veins are blood vessels that carry blood from the body to the heart. Arteries are blood vessels that carry blood away from the heart to the body.

The Heart is hollow organ which is composed of four muscular chambers the right and left atrium and ventricles that is specialized for pumping blood throughout the body. The heart is also consists of four valve; two atrioventricular valve which is the bicuspid and tricuspid valve that is allowing blood to flow in the atria and closes when there is a increase ventricular pressure that prevent backflow into the atria as ventricles contract (Craft, Gordon, and Tiziani, 2011), and the semilunar valves which include the pulmonary and aortic valves is located at the exit of the large arteries from the ventricles that opens when there is intraventricular pressure exceeded the aortic and pulmonary pressure which allows the blood flow into the systemic

AORTA: Located superior tot he heart between the two atriums, was reddish in color and bean-shaped, the Vena Cava was attached at the dorsal side of the ventricle, and it was blue in color with a threadish appearance.