The circulatory system of the human body is composed of many large and small blood vessels that transport blood throughout the body. The largest artery in the human body is the aorta. This blood vessel is responsible for pumping oxygenated blood from the left side of the heart to the head and body. The aorta is attached to the left ventricle of the heart.
Although there are many different species of both wallabies and kangaroos that span a wide range of sizes, wallabies only tend to weigh between four pounds and 53 pounds (2 kg to 24 kg) and grow a mere 12 inches to 24 inches (30 cm to 104 cm) tall, not including their tails [source: Wallaby].
Kangaroos vary in size. The average Red Kangaroo stands approximately 1.5 metres (4.9 ft) tall. Accounts of sizes greater than this are not uncommon, with some large males rep â¦ ortedly reaching approximately 2 metres (6.6 ft).The Red Kangaroo can weigh from 18kg (39 lb) up to 90 kilograms (198 lb) for very large specimens. The male is heavier, and tends to weigh an average of 65 kg (143 lb).angaroos vary in size. The average Red Kangaroo stands approximately 1.5 metres (4.9 ft) tall. Accounts of sizes greater than this are not uncommon, with some large males rep â¦ ortedly reaching approximately 2 metres (6.6 ft).