Pulmonary Circulation
Pulmonary Circulation - Related Videos
01:19
Overview of Pulmonary Circulation
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2024
The pulmonary circulation is a vital system in our body that acts as a bridge between the respiratory and cardiovascular systems. It serves as a transport network for deoxygenated blood from the heart to the lungs and then returns oxygen-rich blood back to the heart. The process begins with the right ventricle of the heart pumping deoxygenated blood into the pulmonary trunk. This large vessel extends about 5 centimeters before splitting into the left and right pulmonary arteries. These arteries...
01:15
Overview of Systemic and Pulmonary Circulation
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2024
The systemic and pulmonary circuits are crucial components of the circulatory system, working together to transport blood between the heart, lungs, and the rest of the body. The process begins with pulmonary circulation, where deoxygenated blood is pumped from the right ventricle to the lungs via the pulmonary trunk and arteries. Upon reaching the lungs, the blood becomes oxygenated and returns to the heart, specifically to the left atrium, via the pulmonary veins. The oxygenated blood is sent...
07:06
Selective Harvesting of Marginating-pulmonary Leukocytes
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Cited by 1 •
2016
Marginating-pulmonary leukocytes exhibit unique characteristics and distinct immunological functions compared to other leukocyte populations. Here we describe selective harvesting of this subpopulation of pulmonary leukocytes, by forced perfusion of the lungs in rats and mice. Marginating-pulmonary leukocytes seem critical in determining susceptibility to blood-borne and lung-related diseases.
08:17
Murine Echocardiography of Left Atrium, Aorta, and Pulmonary Artery
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Cited by 8 •
2017
The following protocol describes the methodology for the acquisition and analysis of echocardiographic images used to obtain the Left Atrial Volume (LAV), Aorta (Ao) diameter, and Pulmonary Artery (PA) diameter in mice. This technique is a non-invasive, non-terminal procedure that allows assessment of the cardiopulmonary function.
10:56
Transplantation of Pulmonary Valve Using a Mouse Model of Heterotopic Heart Transplantation
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Cited by 7 •
2014
In order to understand the cellular and molecular mechanisms underlying neotissue formation and stenosis development in tissue engineered heart valves, a murine model of heterotopic heart valve transplantation was developed. A pulmonary heart valve was transplanted to recipient using the heterotopic heart transplantation technique.
FAQs
Its low-pressure design helps protect the delicate blood vessels within the lungs while still allowing blood to pass through capillary networks surrounding the alveoli. This balance is important because pulmonary circulation must support repeated gas exchange during each cardiac cycle without placing excessive pressure on the lung’s specialized vascular structures.
Capillary networks surrounding the alveoli provide the site where blood and inhaled air can exchange gases. Carbon dioxide diffuses out of the blood into the alveoli, while oxygen diffuses in the opposite direction. This localized exchange changes the blood’s oxygenation before it returns toward the left side of the heart.
Matching blood flow with ventilation helps the lungs exchange gases efficiently. Blood reaching alveolar capillaries must encounter ventilated alveoli so carbon dioxide can leave and oxygen can enter. Pulmonary circulation therefore works closely with ventilation rather than functioning as an isolated transport route, supporting effective oxygen delivery and carbon dioxide removal.
During each cardiac cycle, the right ventricle provides the pumping force that sends blood through the pulmonary arteries toward the lungs. After gas exchange occurs in the alveolar capillary networks, oxygenated blood travels through the pulmonary veins to the left side of the heart, completing the pulmonary route.
A useful tracing follows blood from the right side of the heart through the pulmonary arteries, into capillary networks around the alveoli, and onward through the pulmonary veins to the left side. Examining this sequence connects cardiac pumping with the locations where oxygen enters blood and carbon dioxide leaves it.
Pulmonary circulation provides the physiological context for understanding pulmonary hypertension because it normally operates through a low-pressure network in the lungs. Studying its pathway, pressure design, and relationship to gas exchange helps researchers consider how changes involving the pulmonary vessels could affect oxygen delivery, carbon dioxide removal, and overall cardiovascular function.