Major Cardiac Circuits

There are two major cycles in the heart the systemic loop and the pulmonary loop. The systemic loop begins with oxygen rich blood coming from the lungs enters the upper left chamber of the heart. As the blood flows through the entire heart the blood then begins the journey through

In conclusion, the respiratory and cardiovascular systems are directly related in a complex manner, relying on one another to perform their physiological functions. Only together can both systems work to maintain the body’s internal balance, this is evident when physical demand is higher than normal. In order to meet this demand, the heart must pump more nutrient-rich blood around the body; however it needs oxygen to do this, in response the

Both the right and left atrium contract causing blood to flow though the two valves, and then into the left ventricle. The left ventricle pumps blood into the systemic circulation through the aorta. This systemic circulation system is much bigger than the pulmonary circulation system, which is why the left ventricle is so big. The blood on the left side of the heart is oxygenated. It becomes oxygenated when the deoxygenated blood passes through the right atrium and then flows into the left ventricle. It is then pumped along the pulmonary artery into the lungs where it is oxygenated. It then travels through the pulmonary veins back into the heart. It enters through the left atrium and then travels to the left ventricle. This process is repeated over and over again, to make blood continuously flow through the heart, lungs and body. This process ensures that there is always enough oxygen for the body to work

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

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

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 right atrium is where the process begins. Then, blood travels through the tricuspid valve to the right ventricle, and from there to the pulmonary artery. Once the blood travels through the pulmonary artery, it reaches the lungs. While in the lungs, the blood goes through a gas exchange: deoxygenated blood gets oxygenated (The gas exchange takes place in the alveoli, which are tiny air sacs in the bottom of the lungs

I am going to show the similarities and differences of circulatory system of human and echinoderm. To begin with, I am going to write about the circulatory system of human. There are two types of circulation in circulatory system. First of all, pulmonary circulation is the part of the circulation, which carries oxygen depleted blood away from the heart, to lungs, and back to the heart. At first, in process of this circulation oxygen-depleted blood enters right atrium, and the blood pumped into the right ventricle. Then, the blood pumped to the pulmonary valve and goes into the pulmonary artery, and pulmonary artery separated into both right and left pulmonary arteries, which travel to each lung. At the lungs, the blood moves through capillary beds, which is the process that eliminating the carbon dioxide and adding oxygen to the blood. The oxygenated blood then leaves the lungs and goes back to the left atrium, and then blood flows to the left ventricle. From the left ventricle, the blood pumps to the aorta, which is delivering oxygenated blood to the whole body. Secondly, the systemic circulation is that carries oxygenated blood from the heart and to other parts of the body. First, in the process of systemic circulation, oxygenated blood from the lungs moves to left atrium, and then the blood pumps to the left ventricle. Then blood pumps to the aorta, and waste and carbon dioxide

Did you know the circulatory system comprises the heart, veins, capillaries and arteries? The system moves pure oxygenated blood in a continuous and controlled way from the lungs and heart so that blood can reaches every cell. Blood travels through a type of network of vessels that include capillaries that permeate every tissue of the body. Once it’s depleted of oxygen, the blood returns to the lungs and heart and the cycle continues.

The human body is a very complex organism composed of different types of systems and functions. All the functions that each system has, is what makes possible for the body to obtain life. One of the most important systems in one’s body is the circulatory system, where the heart, the lungs, and the blood vessels work together to form the circle part of the circulatory system. The pumping of the heart forces the blood on its journey. The body’s circulatory system really has three parts: pulmonary circulation, coronary circulation, and systemic circulation. Each part must be working independently in order for them to all work together. However, when one of the parts of the circulatory system does not

The respiratory system and cardiovascular work closely together to make sure that organ tissues obtain sufficient oxygen. Oxygen is vital for cellular functions. The air inhaled in and kept in the lungs is transported to the blood. The blood is circulated by the heart, which pumps the oxygenated blood from the lungs to the body. Moreover, the two body systems work together to get rid of waste products such as carbon dioxide. They perform in order and are frequently referred to as the cardio-respiratory system, a combined name that highlights their close connection. After carbon dioxide and oxygen move across the alveolar wall in the lungs, the carbon dioxide-poor blood, oxygen-rich moves through pulmonary veins to the left atrium of the heart.

Blood is one of the most vital components of the human body. The blood carries many functions such as to supply oxygen to the bodies tissues, remove metabolic waste products, regulate our core temperature as well as fighting infection and foreign bodies (Glover, 1997). The cardiovascular system is composed of the heart and its vessels. The heart is an involuntary muscle which receives blood to the atrias, which is then pumped via the ventricles. The vessels are composed of three main types. Arteries, veins and capillaries; all which transport blood throughout the entirety of the body. The constant action of both the vessels and heart ensure that the body receives a continuous supply of blood, keeping us within our homeostatic limits.

1 When the ventricle contracts, the oxygenated blood is taken to the carotid arteries (to the head), and deoxygenated blood is taken to the pulmocutanoeus arteries (to the skin and lungs where fresh oxygen can be picked up).2 In systematic circulation of a human, arteries pick up oxygen-rich blood from the heart and transport it to the body tissues. During this process oxygen is diffused into the cells and carbon dioxide is also diffused from the cells into the blood. In pulmonary circulation, deoxygenated blood is carried from the heart to the lungs and oxygenated blood from the lungs is returned to the heart.3 The 4 chambered heart of a human has the advantage over simpler structures because it allows us to send our deoxygenated blood to the lungs and our oxygenated blood to the rest of the body without having to mix the two. 4 Because of a human’s size and complexity, we need a more efficient circulation system and that is why a 4 chambered heart works best for us, while a 3 chambered heart works best for frogs because they are much smaller and more simple than humans.

Blood consists of plasma and formed elements. Erythrocytes transport mainly oxygen to all body tissues. Leukocytes protect the body against pathogens by direct attack or by forming antibodies. Platelets play an important role in blood clot formation. The heart is divided into four chambers. It acts as a double pump system. The pulmonary circuit, which provides for gas exchange, is served by the right atrium and right ventricle of the heart. The systematic circuit, which supplies blood to all body tissues, is served by the left atrium and left ventricle of the heart. For each heartbeat, the P wave indicates the atrial depolarization, the QRS complex reflects the ventricular depolarization, and the T wave reflects the

The heart is what keeps all living breathing species alive, animals or humans. If the heart was to shut down but the nervous system continued and was active, it would not matter. The entire body would shut down because once the supplier no longer delivers what is needed; organs will no longer function correctly, therefore causing irreversible damage. Arteries are what carried the rich oxygenated blood from the heart to the rest of the organs throughout the body. The Veins are what bring back the carbon dioxide blood to the heart. It then has to be put through a cycle so that it can be shipped back out. Blood travels from the right atrium through the tricuspid valve, to the right ventricle. From there, it is pumped to the lungs, the oxygen-rich blood goes to the left atrium and then through the mitral valve to the left ventricle where it goes to the aorta to be pumped around the body (Colombo 7). What looks to be a complicated process that would take hours or minutes is actually done in a matter a seconds.