X6 highlights. October 15, 2015: BMW X6M has been launched at a price tag of Rs. 1.60 Crore (ex-showroom Chennai). Under the hood, the car features a 4.4-litre Twin Turbo V8 that produces will 575 PS of power and a humongous torque of 750 Nm and is the most powerful motor ever developed by BMW.
Supply and demand. The coronary arteries regulate the supply of blood to your heart muscle depending on how much oxygen your heart needs at the time, as indicated by: 1  The number of times your heart beats per minute (heart rate). 2  Your blood pressure. 3  The force of your heart's contractions. 4  The thickness of your heart muscle.
They carry oxygen-rich blood from the aorta to the heart muscle, which must have its own blood supply to function. Veins. The veins also are major blood vessels connected to your heart. The pulmonary veins carry oxygen-rich blood from the lungs to the left side of the heart so it can be pumped to the body. The superior and inferior vena cavae are large veins that carry oxygen-poor blood from the body back to the heart.