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  2. Pulmonary regurgitation - Wikipedia

    en.wikipedia.org/wiki/Pulmonary_regurgitation

    Pulmonary (or pulmonic [4]) regurgitation (or insufficiency, incompetence) is a condition in which the pulmonary valve is incompetent [5] and allows backflow from the pulmonary artery to the right ventricle of the heart during diastole. [6] While a small amount of backflow may occur ordinarily, it is usually only shown on an echocardiogram and ...

  3. Zones of the lung - Wikipedia

    en.wikipedia.org/wiki/Zones_of_the_lung

    On the other hand, gravity causes a gradient in blood pressure between the top and bottom of the lung of 20 mmHg in the erect position (roughly half of that in the supine position). Overall, mean pulmonary venous pressure is ~5 mmHg. Local venous pressure falls to -5 at the apexes and rises to +15 mmHg at the bases, again for the erect lung.

  4. Pulmonary valve - Wikipedia

    en.wikipedia.org/wiki/Pulmonary_valve

    The pulmonary valve (sometimes referred to as the pulmonic valve) is a valve of the heart that lies between the right ventricle and the pulmonary artery, and has three cusps. It is one of the four valves of the heart and one of the two semilunar valves , the other being the aortic valve .

  5. Pulmonary valve stenosis - Wikipedia

    en.wikipedia.org/wiki/Pulmonary_valve_stenosis

    Pulmonary valve stenosis (PVS) is a heart valve disorder. Blood going from the heart to the lungs goes through the pulmonary valve, whose purpose is to prevent blood from flowing back to the heart. In pulmonary valve stenosis this opening is too narrow, leading to a reduction of flow of blood to the lungs. [1] [5]

  6. Cardiac physiology - Wikipedia

    en.wikipedia.org/wiki/Cardiac_physiology

    The function of the right heart, is to collect de-oxygenated blood, in the right atrium, from the body via the superior vena cava, inferior vena cava and from the coronary sinus and pump it, through the tricuspid valve, via the right ventricle, through the semilunar pulmonary valve and into the pulmonary artery in the pulmonary circulation ...

  7. These Are the 2 Biggest Signs of Heart Valve Damage ... - AOL

    www.aol.com/2-biggest-signs-heart-valve...

    “The valves prevent the blood from returning back, or leaking back, to the heart or to the lungs once the blood is pumped,” he says. ... right atrium and the bottom chambers are the left ...

  8. Wiggers diagram - Wikipedia

    en.wikipedia.org/wiki/Wiggers_diagram

    A Wiggers diagram modified from [1]. A Wiggers diagram, named after its developer, Carl Wiggers, is a unique diagram that has been used in teaching cardiac physiology for more than a century.

  9. Pulmonary circulation - Wikipedia

    en.wikipedia.org/wiki/Pulmonary_circulation

    Image showing main pulmonary artery coursing ventrally to the aortic root and trachea. The right pulmonary artery passes dorsally to the ascending aorta, while the left pulmonary artery passes ventrally to the descending aorta. De-oxygenated blood leaves the heart, goes to the lungs, and then enters back into the heart. [2]

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