great vessels

Pulmonary Trunk

Pulmonary Trunk The structure indicated is the pulmonary trunk. The pulmonary trunk is one of the great vessels – a term which refers to the major arteries and veins which bring blood to and from the heart. These include: Superior and inferior vena cavae Pulmonary arteries Pulmonary veins Aorta The pulmonary trunk carries deoxygenated blood from the right ventricle of the heart to the lungs for oxygenation, via the right and left pulmonary arteries. This is the only artery in the adult human body that carries deoxygenated blood. In fetal life, the umbilical arteries also carry deoxygenated blood – this …

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pulmonary trunk

Aortic Arch

Aortic Arch The structure indicated is the arch of the aorta. The aorta arises from the left ventricle of the heart and supplies the body with oxygenated blood. The aorta can be divided into thoracic and abdominal parts (the thoracic aorta pierces the diaphragm to enter the abdominal cavity, becoming the abdominal aorta). The thoracic aorta consists of: Ascending aorta Aortic arch Descending (thoracic) aorta The aortic arch lies in the superior mediastinum and begins and ends at the level of the angle of Louis (sternal angle) which lies at the level of the intervertebral disc between T4/T5. The arch …

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aortic arch