Heart and Right Atrium

Likewise, Blood flows from the right atrium to the right ventricle, and then is pumped to the lungs to receive oxygen. From the lungs, the blood flows to the left atrium, then to the left ventricle, forming the complete circulation.

The heart is composed of four chambers, the right and left atrium and the right and left ventricles. This important muscle is used to pump and create pressure to circulate blood throughout our bodies2. It is important for our heart to properly function because it helps blood deliver important nutrients and oxygen to the rest of our body. The heart is located in between the lungs (2/3 slightly tilted to the left), in the central portion of the thorax2. The atria collect the blood versus the ventricles which pump out the blood to the rest of the body. In order for the heart to properly function is must also receive enough oxygen and proper electrical stimulus. The coronary arteries are in charge of distributing adequate amounts of oxygen to the heart2. The heart’s nodes help the heart function with electrical impulses which allow the heart to contract. These are also known as the pacemakers of the heart. Failure to properly function can result in a heart attack.

The heart, blood and blood vessels make up the basis of the cardiovascular system also known as the circulatory system. The average human body contains approximately 5 litres of blood which is carried around the body via a network of blood vessels split into three types; arteries, veins and capillaries. The arteries are the largest of the three vessels and carry blood away from the heart. Veins carry blood to the heart and are smaller than arteries, then finally the smallest vessels known as capillaries distribute the oxygen rich blood to organs whilst simultaneously picking up the waste carbon dioxide and water from the organs to transport back to the heart where it can be pumped into the lungs to be exhaled.

The heart is a muscular organ that rests behind the sternum. The heart pumps blood through a network of arteries and veins that makeup the cardiovascular system. (The Heart (Human Anatomy)

The cardiac muscles are the muscle of the heart itself. The cardiac muscle is the tissue that makes

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

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

The human heart is a found within the chest cavity surrounded by the lungs. Roughly the size of a fist, the heart is a tenacious automated muscular unit that directs oxygenated blood through a sequence of four chambers. Inside these chambers there are four corresponding valves which permit blood to travel in the forward direction. On any given day the heart beats 100,000, and is capable of perfusing blood throughout the bodies’ 60,000 mile system of blood vessels (Christensen & Kockrow, 2011).

The heart is one of the main organs of the human body which is responsible for pumping blood throughout the body including the brain and other organs through the circulatory system.

The atrium chambers are small and collect blood returning to the heart from the systemic or pulmonary circulation. The ventricles are larger than the atrium chambers and they pump blood out into the circulation. The right atrium and right ventricle are separated by the tricuspid valve. The tricuspid valve has three flaps that prevent backflow of the blood from the right ventricle into the right atrium. The left side of the heart has a mitral valve also known as the bicuspid valve that consists of two flaps that separates the left atrium and left ventricle. The heart has a thick wall that is mainly of muscle and is constantly contracting and relaxing through every heartbeat. The hearts wall has three layers of tissue which consist of the innermost layer called the endocardium which is a smooth, thin membrane that lines the inside of the champers of the heart and forms the surface of the valves. The second layer is the middle layer that is called the myocardium. It is the muscular wall of the heart and is made of many layers of cardiac muscle which is striated and involuntary muscle tissue. Then the outer layer of the heart is the epicardium that is a double layered fibrous sac that covers and protects the heart.

The heart beats faster and works harder when you are active. It beats more slowly and works less hard when you are resting. Your brain sends signals to the heart to meet the needs of your body.

The heart is responsible for moving the body’s blood, and is primarily composed of cardiac muscle. Similar to skeletal muscle, the cells are

circulation. Pulmonary circulation is where the blood is pumped to the lungs. It arrives deoxygenated

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).

The hearts role is to pump oxygenated blood to every cell in the body by having a continuous beat. Throughout time the heart has created mystery, however current technology has solved most of the mystery, there still remains an enchantment and eagerness to learn more.