Anatomy of Aorta
The aorta is a cane-shaped artery. It starts in your heart. From there, the aorta is the main vessel through which oxygen-rich blood travels from the heart to the rest of the body. It also delivers nutrients and hormones. The aorta’s branches ensure these substances reach vital organs (brain, heart, kidneys, intestines, limbs, etc) and nearby supporting tissue.
it extends up toward your head a short distance before curving down. The aorta passes through your chest and abdominal cavities and ends at your pelvis.
The aorta is the largest blood vessel in your body. It’s about 2-3cm in in diameter at its widest point. As the aorta makes its way toward your pelvis, its diameter narrows to two centimetres.
It’s a complex structure that has three layers of tissue.
The aorta has many sections, including the:
- Aortic root: Section that attaches to the heart. This is the widest part of the aorta.
- Aortic valve: Three flaps of tissue (leaflets) that snap open and shut to release oxygen-rich blood from the heart.
- Ascending aorta: Upward curve that occurs shortly after the aorta leaves the heart.
- Aortic arch: Curved segment that gives the aorta its cane-like shape. It bridges the ascending and descending aorta.
- Descending aorta: Long, straight segment that runs from your chest (thoracic aorta) to your abdominal area (abdominal aorta).
