The Aorta
Aorta
The Aorta (/eɪˈɔːrtə/ ay-OR-tə) is the main and largest artery in the human body, originating from the left ventricle of the heart and extending down to the abdomen, where it splits into two smaller arteries.
Etymology
The term "Aorta" comes from the Ancient Greek word ἀορτή (aortē), which means 'that which is hung up' or 'the great artery'.
Anatomy
The aorta is traditionally divided into the Ascending aorta, the Aortic arch, and the Descending aorta. The descending aorta is, in turn, divided into the Thoracic aorta and the Abdominal aorta. The aorta carries oxygenated blood from the heart to the rest of the body.
Ascending Aorta
The ascending aorta begins at the upper part of the left ventricle. It is located in the middle mediastinum and is about 5 cm in length.
Aortic Arch
The aortic arch is the part of the aorta that bends between the ascending and descending aorta. It gives rise to branches that supply blood to the head and arms.
Descending Aorta
The descending aorta is the part of the aorta that travels down the thorax and abdomen. It is divided into the thoracic aorta and the abdominal aorta.
Related Terms
- Artery: A blood vessel that carries blood away from the heart.
- Ventricle: One of two large chambers in the heart which collect and expel blood received from an atrium towards the peripheral beds within the body and lungs.
- Mediastinum: The central compartment of the thoracic cavity surrounded by loose connective tissue.
- Thorax: The region of the body forming a cavity that houses the heart and the lungs.
- Abdomen: The part of the body that contains the stomach, liver, and other organs.
External links
- Medical encyclopedia article on The Aorta
- Wikipedia's article - The Aorta
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