Descending thoracic aorta

thoracic aortathoracicthoracic partaorta, thoracicthoracic aortic
The descending thoracic aorta is a part of the aorta located in the thorax.wikipedia
67 Related Articles

Aorta

aorticaortic archaortic root
The descending thoracic aorta is a part of the aorta located in the thorax. The initial part of the aorta, the ascending aorta, rises out of the left ventricle, from which it is separated by the aortic valve.
One way of classifying a part of the aorta is by anatomical compartment, where the thoracic aorta (or thoracic portion of the aorta) runs from the heart to the diaphragm.

Descending aorta

descending thoracic aortadorsal aortaproximal descending aorta
It is a continuation of the descending aorta and contained in the posterior mediastinal cavity.
The descending aorta anatomically consists of two portions or segments, the thoracic and the abdominal aorta, in correspondence with the two great cavities of the trunk in which it is situated.

Mediastinum

mediastinalposterior mediastinumanterior mediastinum
It is a continuation of the descending aorta and contained in the posterior mediastinal cavity.
thoracic part of the descending aorta

Thoracic diaphragm

diaphragmdiaphragmatichemidiaphragm
The descending thoracic aorta begins at the lower border of the fourth thoracic vertebra where it is continuous with the aortic arch, and ends in front of the lower border of the twelfth thoracic vertebra, at the aortic hiatus in the diaphragm where it becomes the abdominal aorta.
From above, the diaphragm receives blood from branches of the internal thoracic arteries, namely the pericardiophrenic artery and musculophrenic artery; from the superior phrenic arteries, which arise directly from the thoracic aorta; and from the lower internal intercostal arteries.

Aortic arch

arch of the aortaaortic knobisthmus of aorta
The descending thoracic aorta begins at the lower border of the fourth thoracic vertebra where it is continuous with the aortic arch, and ends in front of the lower border of the twelfth thoracic vertebra, at the aortic hiatus in the diaphragm where it becomes the abdominal aorta. Three vessels come out of the aortic arch: the brachiocephalic artery, the left common carotid artery, and the left subclavian artery.

Esophagus

oesophagusesophageallower esophageal sphincter
In front of the descending thoracic aorta lies the root of the left lung, the pericardium, the esophagus, and the diaphragm.
The upper parts of the esophagus and the upper esophageal sphincter receive blood from the inferior thyroid artery, the parts of the esophagus in the thorax from the bronchial arteries and branches directly from the thoracic aorta, and the lower parts of the esophagus and the lower esophageal sphincter receive blood from the left gastric artery and the left inferior phrenic artery.

Abdominal aorta

abdominalabdominal aorticaorta, abdominal
The descending thoracic aorta begins at the lower border of the fourth thoracic vertebra where it is continuous with the aortic arch, and ends in front of the lower border of the twelfth thoracic vertebra, at the aortic hiatus in the diaphragm where it becomes the abdominal aorta.

Bronchial artery

bronchial arteriesLeft bronchial arteriesBronchial artery (rami bronchiales partis thoracicae aortae)
Bronchial arteries
The left bronchial arteries (superior and inferior) usually arise directly from the thoracic aorta.

Thoracic duct

lymph ducts
To the right is the azygos veins and thoracic duct, and to the left is the left pleura and lung.
It traverses the diaphragm at the aortic aperture and ascends the superior and posterior mediastinum between the descending thoracic aorta (to its left) and the azygos vein (to its right).

Superior phrenic arteries

superior phrenicsuperior phrenic artery
Superior phrenic arteries
The superior phrenic arteries are small and arise from the lower part of the thoracic aorta; they are distributed to the posterior part of the upper surface of the diaphragm, and anastomose with the musculophrenic and pericardiacophrenic arteries.

Intercostal arteries

posterior intercostal arteryanterior intercostal branchesmusculophrenic
Note: The posterior intercostal arteries are branches that originate throughout the length of the posterior aspect of the descending thoracic aorta.
The lower nine arteries are the aortic intercostals, so called because they arise from the back of the thoracic aorta.

Mediastinal branches of thoracic part of aorta

Mediastinal arteriesmediastinal branches
Mediastinal arteries

Thorax

chestthoracicpectoral
The descending thoracic aorta is a part of the aorta located in the thorax. These vessels supply blood to the head, neck, thorax and upper limbs.

Thoracic vertebrae

thoracic vertebradorsal vertebraethoracic
The descending thoracic aorta begins at the lower border of the fourth thoracic vertebra where it is continuous with the aortic arch, and ends in front of the lower border of the twelfth thoracic vertebra, at the aortic hiatus in the diaphragm where it becomes the abdominal aorta.

Aortic hiatus

aortic aperturehiatus aorticus
The descending thoracic aorta begins at the lower border of the fourth thoracic vertebra where it is continuous with the aortic arch, and ends in front of the lower border of the twelfth thoracic vertebra, at the aortic hiatus in the diaphragm where it becomes the abdominal aorta.

Ascending aorta

aortic rootaorticaortic bulb
The initial part of the aorta, the ascending aorta, rises out of the left ventricle, from which it is separated by the aortic valve.

Aortic valve

aorticaortic valvesaortic semilunar valve
The initial part of the aorta, the ascending aorta, rises out of the left ventricle, from which it is separated by the aortic valve. The two coronary arteries of the heart arise from the aortic root, just above the cusps of the aortic valve.

Coronary arteries

coronary arterycoronaryarteries
The two coronary arteries of the heart arise from the aortic root, just above the cusps of the aortic valve.

Pulmonary artery

pulmonary arteriespulmonary trunkpulmonary
The aorta then arches back over the right pulmonary artery.

Brachiocephalic artery

brachiocephalic trunkinnominate arterybrachiocephalic
Three vessels come out of the aortic arch: the brachiocephalic artery, the left common carotid artery, and the left subclavian artery.

Common carotid artery

carotidcarotid arteriescarotid artery
Three vessels come out of the aortic arch: the brachiocephalic artery, the left common carotid artery, and the left subclavian artery.

Subclavian artery

subclavian arteriesleft subclavian arterysubclavian
Three vessels come out of the aortic arch: the brachiocephalic artery, the left common carotid artery, and the left subclavian artery.

Head

cephalicheadsCephal
These vessels supply blood to the head, neck, thorax and upper limbs.

Neck

cervicalnuchalcervical region
These vessels supply blood to the head, neck, thorax and upper limbs.

Upper limb

upper extremityupper limbsupper
These vessels supply blood to the head, neck, thorax and upper limbs.