* Descending aorta — the section from the arch of aorta to the point where it divides into the common iliac arteries

The ventral aorta carries de-oxygenated blood from the heart to the gills ; part of this vessel forms the ascending aorta in tetrapods ( the remainder forms the pulmonary artery ).

A second, dorsal aorta carries oxygenated blood from the gills to the rest of the body, and is homologous with the descending aorta of tetrapods.

The smooth muscle of the great arteries and the population of cells that form the aorticopulmonary septum that separates the aorta and pulmonary artery is derived from cardiac neural crest.

In fact the smooth muscle within the abdominal aorta is derived from mesoderm, and the coronary arteries, which arise just above the semilunar valves, possess smooth muscle of mesodermal origin.

Mean arterial blood pressure is highest in the aorta and mean arterial pressure diminishes across the circulation from aorta to arteries to arterioles to capillaries to veins back to atrium: the difference between aortic and right atrial pressure accounts for blood flow in the circulation.

:; Aortic regurgitation / aortic insufficiency: Deficiency of the aortic valve that permits regurgitation from the aorta into the left ventricle.

:; Intra-aortic balloon pump ( IABP ): A balloon placed in the thoracic aorta to supplement cardiac output from the heart.

It returns from the lungs through the pulmonary veins to the left atrium where it is pumped through the mitral valve into the left ventricle before leaving through the aortic valve to the aorta.

It then travels through the mitral valve to the left ventricle, from where it is pumped through the aortic semilunar valve to the aorta.

* Overriding aorta, a medical condition in which Aorta emerge from abnormal position.

The blood flows from the dorsal aorta throughout the body.

Columbus, as his immediate successor in Padua, and afterwards professor at Rome, distinguished himself by rectifying and improving the anatomy of the bones, by giving correct accounts of the shape and cavities of the heart, of the pulmonary artery and aorta and their valves, and tracing the course of the blood from the right to the left side of the heart, by a good description of the brain and its vessels, and by correct understanding of the internal ear, and the first good account of the ventricles of the larynx.

( 1986 study of 156 female patients with Turner syndrome ) showed a significantly greater number of deaths from diseases of the circulatory system than expected, half of them due to congenital heart defects — mostly postductal coarctation of the aorta.

The kidneys receive their blood supply of 1. 25 L / min ( 25 % of the cardiac output ) from the renal arteries which are fed by the abdominal aorta.

The thymic epithelium is the first to develop, and appears in the form of two flask-shape endodermal diverticula, which arise, one on either side, from the third branchial pouch ( pharyngeal pouch ), and extend lateralward and backward into the surrounding mesoderm and neural crest-derived mesenchyme in front of the ventral aorta.

The left atrium receives newly oxygenated blood from the lungs as well as the pulmonary vein which is passed into the strong left ventricle to be pumped through the aorta to the different organs of the body.

* The paired testicular arteries arise directly from the abdominal aorta and descend through the inguinal canal, while the scrotum and the rest of the external genitalia is supplied by the internal pudendal artery ( itself a branch of the internal iliac artery ).

In particular, trying to lift or move large amounts of weight ( for example, in high-weight and low-repetition strength training ) is a highly risky activity, because this particular type of exercise causes momentary but extreme spikes in blood pressure, and can cause potentially life-threatening complications ( for example, aneurysm of the walls connected to the aorta ).

The oxygen-rich (" red ") blood then returns to the left heart, via the pulmonary veins, and is pumped through the aorta to the rest of the body, including the heart muscle itself.

Abdominal aortic aneurysm ( also known as AAA, pronounced " triple-a ") is a localized dilatation ( ballooning ) of the abdominal aorta exceeding the normal diameter by more than 50 percent, and is the most common form of aortic aneurysm.

The aorta is usually divided into five segments / sections:

The aorta is an elastic artery, and as such is quite distensible.

The fundamental unit of the aorta is the elastic lamella, which consists of smooth muscle and elastic matrix.

Aortic pressure is highest at the aorta and becomes less pulsatile and lower pressure as blood vessels divide into arteries, arterioles, and capillaries such that flow is slow and smooth for gases and nutrient exchange.

The pulsatile nature of blood flow creates a pulse wave that is propagated down the arterial tree, and at bifurcations reflected waves rebound to return to semilunar valves and the origin of the aorta.

With age, the aorta stiffens such that the pulse wave is propagated faster and reflected waves return to the heart faster before the semilunar valve closes, which raises the blood pressure.

The stiffness of the aorta is associated with a number of diseases and pathologies, and noninvasive measures of the pulse wave velocity are an independent indicator of hypertension.

* The middle suprarenal artery is provided by the abdominal aorta

Another possible cause is dissection of the aorta, extending into one or more of the spinal arteries.

The aorta is the root systemic artery.

The fourth and final chamber is the conus arteriosus which contains several valves and sends blood to the ventral aorta.

The ventral aorta delivers blood to the gills where it is oxygenated and flows, through the dorsal aorta, into the rest of the body.

In teleosts, the conus arteriosus is very small and can more accurately be described as part of the aorta rather than of the heart proper.

This divides the ventricle into two halves but, because the septum does not reach the whole length of the heart, there is a considerable gap near the openings to the pulmonary artery and the aorta.

The aortic valve is the valve between the left ventricle of the heart and the aorta, which is the largest artery in the body and carries the entire output of blood.

Blood leaves through the left ventricle to the aorta, the body's largest artery.

The abdominal aorta is the largest artery in the abdominal cavity.

The descending aorta is part of the aorta, the largest artery in the body.

* In the largest arteries, as the aorta and brachiocephalic, the amount of elastic tissue is very considerable ; in these vessels a few bundles of white connective tissue also have been found in the middle coat.

Course of the aorta in the thorax ( anterior view ), starting posterior to the main pulmonary artery, but then anterior to the right pulmonary arteries, the human trachea | trachea and the esophagus, but then turning posteriorly to course dorsally to these structures.

The fourth aortic arch vessel survives in these vertebrates as the arch of the aorta, the third aortic arch vessel persists as the brachiocephalic artery or the root of the internal carotid, and the sixth arch contributes to the pulmonary arteries.

( In tetrapods, the ventral aorta has divided in two ; one half forms the ascending aorta, while the other forms the pulmonary artery ).

Here the shark pumps blood to its gills via the ventral aorta artery where it branches into afferent brachial arteries.

** Branches of the aorta, such as the carotid artery, the subclavian artery, the celiac trunk, the mesenteric arteries, the renal artery and the iliac artery.

Between 5 % and 10 % of those born with Turner syndrome have coarctation of the aorta, a congenital narrowing of the descending aorta, usually just distal to the origin of the left subclavian artery ( the artery that branches off the arch of the aorta to the left arm ) and opposite to the duct ( and so termed " juxtaductal ").

This is generally bowel or mesentery, but other sites, such as the renal ( kidney ), liver or hepatic ( liver ) artery or even aorta have been described.