Aorta. The aorta is the body's largest artery (the blood vessels that carry oxygen-rich blood). Roughly the diameter of a garden hose, this artery extends from the aortic valve in the heart down through the chest and abdominal region, where it divides into a blood vessel that supplies each leg.
WolffâParkinsonâWhite syndrome (WPW) is one of several disorders of the electrical system of the heart that are commonly referred to as pre-excitation syndromes.olffâParkinsonâWhite syndrome (WPW) is one of several disorders of the electrical system of the heart that are commonly referred to as pre-excitation syndromes.
1 Wolff-Parkinson-White syndrome is characterised by attacks of rapid heart rate (tachycardia).  A person with Wolff-Parkinson-White syndrome has two electrical pathways inside their heart instead of one, and the extra pathway can lead to instability in the electrical control mechanism of the heart.