Anatomy Of The Pulmonary, Coronaries And Veins

1673 Words Jul 27th, 2016 7 Pages
Anatomy Of The pulmonary, Coronaries and aorta arteries

Gross anatomy

The heart and great vessels are roughly in the middle of the thorax, being surrounded laterally and posteriorly by the lungs and anteriorly by the sternum and the central part of the thoracic cage. The heart acts a twofold, self-modifying suction and pressure pump, the parts of which work in union to push blood to all parts of the body. The right half of the heart (right heart) gets ineffectively oxygenated (venous) blood from the body via the SVC and IVC and pumps it through the pulmonary trunk to the lungs for oxygenation. The left half of the heart (left heart) gets well-oxygenated (arterial) blood from the lungs via the pulmonary veins and pushes it into the aorta for circulation to the body (Fig.1) (Moore and Dalley, 2006).

Fig.1. The heart and great vessels (Quoted from Shah, 2005)
I- Anatomy of pulmonary arteries:

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). The fundamental divisions of the trunk are the right and left pulmonary arteries. The right pulmonary artery goes in front of the…

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