Human Heart Research Paper

The heart is located between lungs and it is protected by the rib cage, it is thought to be the same size as a closed fist. The heart is protected a membrane called pericardium, this membrane contains a film of fluid which helps prevent fiction. Each side of the heart consist of an atrium and a ventricle. The right side of the

*Both sides of the heart are doing this at the same exact time and contracting/relaxing is what pumps the blood from one place to the other.

Inside our body there is a powerful muscular pump, which is known as the one of the main organs in the human body. This hollow, cone shaped, pump lies slightly left within the center of the chest called our heart. The heart is made up of different structures and actions in order for it to work, combined with a network of blood vessels form what we know as the cardiovascular system.

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

Our cardiovascular system is composed of the heart and blood vessels. The main purpose of this system is to transport substances throughout the body. Even though transportation is the main function of the cardiovascular system, it is not the only function. Along with transportation we have protection and regulation.

The left side of the heart, has the left atrium and ventricle that takes in oxygenated blood from the lungs and pumps it out of the aorta.

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).

Inside the heart the four chambers were clearly defined and hollow. The wall on the left side of the heart was much thicker and firmer than the wall on the right side. The wall on the right side was very thin. The valves appeared stringy, stretchy and very long.

The cardiovascular system, however, would not be able to effectively complete these functions without help from what is sometimes referred to as the body’s hardest-working organ- the heart. Approximately the size of a fist, the heart is contains four chambers (the uppermost are called the atria and the lowermost are called the ventricles) and four valves. Additionally, the heart is surrounded by the pericardium, a structure that serves to protect the heart, keep the heart stabilized in the chest, and

The Cardiovascular or Circular system is located in the chest cavity and made up of the heart, arteries, veins, blood vessels (capillaries), four chambers of the heart (right atrium, right ventricle, left atrium and left ventricle) and three layers of heart (epicardium/ pericardium, myocardium and endocardium).The function of the heart is to ensure a steady flow of blood throughout the body, supplying oxygen and nutrients to the cells. The heart pumps deoxygenated blood to the lungs by the pulmonary vein to be oxygenated with the aid of the aorta and distribute the blood to the entire body (Abrahams, 2017).

Myocardium makes up the majority of the thickness and mass of the heart wall and is the part of the heart responsible for pumping blood. Below the myocardium is the thin endocardium layer.

The lungs get blood by means of two sets of arteries: pulmonary arteries and bronchial arteries. Deoxygenated blood goes through the pulmonary trunk which separates into a left pulmonary artery that enters the left lung and a right pulmonary artery that enters the right lung. Return of the oxygenated blood to the heart happens by method of the four pulmonary veins which deplete into the left atrium (Tortora and Nielsen, 2012).

has to work harder pumping blood to the rest of the body. Blood in our

The heart sits within a fluid-filled cavity called the pericardial cavity. The walls and lining of the pericardial cavity are a special membrane known as the pericardium. Pericardium is a type of serous membrane that produces serous fluid to lubricate the heart and prevent friction between the ever beating heart and its surrounding organs. Besides lubrication, the pericardium serves to hold the heart in position and maintain a hollow space for the heart to expand into when it is full. The pericardium has 2 layers—a visceral layer that covers the outside of the heart and a parietal layer that forms a sac around the outside of the pericardial cavity.

In order to move blood and wastes the heart acts as a double sided pump creating a never ending circuit. The right side receives deoxygenated blood from the body and forces it into the lungs so that it can become oxygenated. While the left side is precisely the opposite as it receives the blood that was sent to the lungs by the right and pushes it to the body so that our tissues such as muscles can obtain oxygen. If you think about it the heart is like a fast food chain, the right side obtains the food from the lungs and the left