Ventricle

The heart is comprised of four chambers, the right atrium, right ventricle, left atrium and the left ventricle. The right atrium is the chamber which receives blood from the body that has been depleted from its oxygen and pumps it to the right ventricle. The right ventricle then pumps the blood from the right atrium over to the pulmonary artery which as the name would suggest means it goes to the lungs and the oxygen depleted blood is once again oxygenated. The left atrium of the heart then…

valve is located between the upper left chamber of the heart (left atrium) and the lower left chamber of the heart (left ventricle). Normally, this valve opens when the atrium pumps blood into the ventricle, and it closes when the ventricle pumps blood out to the body. Mitral valve regurgitation happens when the mitral valve does not close properly. As a result, blood in the ventricle leaks back into the atrium. Mitral valve regurgitation causes the heart to work harder to pump blood. If the…

form of feline cardiomyopathies. This disease affects the cardiovascular system. The heart has many important anatomical features. One of these being the ventricle of the heart. The ventricle of the heart is the main heart muscle that pumps blood. When HCM occurs the left ventricle within the heart thickens. When the thickening of the ventricle occurs there will be a decreased ventricular chamber volume, and abnormal ventricular relaxation. This deals with the diastolic aspect of the heart.…

Ghost Hearts Doris A. Taylor, inventor/creator of the ghost hearts constantly harvest organs from the newly dead by re-engineering them. Doris is the director of the regenerative Medicine Research for the center of Cell and Organ Biotechnology at the Texas Heart Institute. Dr. Taylor worked on methods of decellularization and in 2008 she perfected the method. Decellularization is taking all the cells out of the organ leaving it with the lipids, sugar, and proteins. Ghost heart or a ghost-like…

Mechanical Heart valves are designed to mimic natural heart valves as closely as possible. The valve is implanted in the heart of the patient where the damaged heart valve was removed. Artificial heart valves allows for correct blood flow through the heart by opening and closing with each heartbeat (St Jude Medical, n.d.). The Medtronic mechanical heart valve contains two leaflets (Medtronic, 2011). The pressure in the heart causes the leaflets to open and close, allowing blood flow in only…

Transposition of the Great Vessels Transposition of the great vessels is a heart condition that is present in infants at birth and often known as a congenital heart defect or the more common term is the transposition of the great arteries(TGA). TGA is when the two main arteries, the pulmonary artery and the aorta, are switched in position, or "transposed". As a normal heart, deoxygenated blood returning to the heart from the body is pumped from the right side of the heart through the pulmonary…

Mechanical heart valves provide their greatest benefit by replacing a fatigued natural valve with a prosthesis that was specifically engineered for the variety of patients who experience heart valve disease, thus relieving the patient of most associated conditions and improving their quality of life. However, throughout the last half century there have been many cases of structural failure and induced conditions such as thrombosis due to the materials used in these devices. Through the many case…

The Edwards SAPIEN heart valve is a collapsible aortic heart valve that can be introduced into the body via a catheter-based delivery system. The valve is designed to replace a patient’s diseased aortic valve without traditional open-heart surgery and while the heart continues to beat. The valve can be implanted in patients using the fransfemoral technique meaning delivered thorough the femoral artery or trans-apical technique meaning delivered via a small incision between the ribs. Prior to…

Heart murmurs are constantly diagnosed in people, but what do heart murmurs do? Does it harm the host? It all depends on the type. From there, we dig deeper. According to http://www.madsci.org/posts/archives/1999-08/933633819.Me.r.html, Heart murmur is the sound that is made because the blood passing through the heart’s valves and chambers make a sound. Sometimes, the valve doesn’t open entirely, and the blood goes back to the chamber it just left. When that happens, it makes a swishing noise,…

This occurs when the ventricles are almost full the atria contracts, pumping more blood into the ventricles. The contraction completes ventricular filling, causing the pressure and volume in the ventricles to further increase. Following Atrial Systole is Ventricular Systole. This is when the ventricles contract, forcing blood back up towards the atria. When the pressure in the ventricles exceeds that in the atria it snaps the AV valves shut, causing the…