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Equine Cardiovascular System - Horse Anatomy (view source)
Revision as of 11:06, 19 November 2012
, 11:06, 19 November 2012→Aorta
Arteries of the systemic circulation transport oxygenated blood from the left ventricle to organs and tissues of the body.
Arteries of the systemic circulation transport oxygenated blood from the left ventricle to organs and tissues of the body.
====Aorta====
====Aorta====
The aorta is the start of the systemic circulation. It begins at the left ventricle, from which it is separated by the aortic valve. The initial portion is enlarged, forming the 'aortic bulb', from which the '''coronary arteries''' supplying the heart wall arise. The aorta ascends to the right of the pulmonary trunk, then turns dorsocaudally and to the left in a U-shape to become the '''aortic arch'''. The '''ascending aorta''' continues caudally to the level of the 6th thoracic vertebra, at which point it becomes the '''descending aorta'''. The descending aorta can be divided into the '''thoracic aorta''' and '''abdominal aorta'''. It runs through the thoracic cavity and continues, via the aortic hiatus in the diaphragm, to the abdomen. It further divides to form its terminal branches at the level of the caudal lumbar vertebrae.
The aorta is the start of the systemic circulation. It begins at the left ventricle, from which it is separated by the aortic valve. The initial portion is enlarged, forming the 'aortic bulb', from which the '''coronary arteries''' supplying the heart wall arise. The aorta ascends to the right of the pulmonary trunk, then turns dorsocaudally and to the left in a U-shape to become the '''aortic arch'''. The '''ascending aorta''' continues caudally to the level of the 6th thoracic vertebra, at which point it becomes the '''descending aorta'''. The descending aorta can be divided into the '''thoracic aorta''' and '''abdominal aorta'''. It runs through the thoracic cavity and continues, via the aortic hiatus in the [[Equine Lower Respiratory Tract - Horse Anatomy#Diaphragm|diaphragm]], to the abdomen. It further divides to form its terminal branches at the level of the caudal lumbar vertebrae.
====Brachiocephalic Trunk====
====Brachiocephalic Trunk====