The largest artery in your body is the Aorta. The largest vein in the body is Vena Cava. The aorta is the largest blood vessel in the body. It is an artery that directly arises from the heart itself and descends through the thorax and into the abdomen. All the arteries of the body, save the pulmonary arteries, stem from the aorta or one of its main branches.
There are many different dinosaur books that state different sizes of the tyrannosaurus rex. These sizes range from 40 feet long to 49 feet long. It's maximum length was probably close to 50 feet long. The paleantologists have only found remains, incomplete remains, of the Tyrannosaurus.
The family contains some of the smallest known ornithischians â the North American Fruitadens, for example, reached a length of only 65 to 75 cm. Heterodontosaurus was amongst the largest known members of its family, reaching a length of between 1 to 1.75 m and weighing 1.8 or 10 kg.Only the South African Lycorhinus might have been larger. The skull was robustly built and triangular in side view. The front of the jaws where covered by a toothless horny beak.nother feature is the specialization of teeth which gave rise to the animal's name. Most dinosaurs (and indeed most reptiles) have a single type of tooth in their jaws, while Heterodontosaurus had three. At the front of the jaw beside the beak were small teeth likely used for chopping off leaves and stems.