Blood clots are clumps that occur when blood hardens from a liquid to a solid. 1  A blood clot that forms inside one of your veins or arteries is called a thrombus. A thrombus may also form in your heart.  A thrombus that breaks loose and travels from one location in the body to another is called an embolus.
The intestines are the part of the digestive system between the stomach and the anus. They are all coiled up to fit inside your abdomen. 1  The small intestine is a tube about 6 metres long in an adult.2  It is greyish-purple in colour and is about 35mm wide.he intestines are part of the digestive system of the body. They are sometimes called the guts or bowels. This system deals with all the food and drink that you take into your body. You can learn more about the digestive system in the topic 'Your waste disposal system ' .
Quick Answer. In humans, the small intestine is about 20 feet long, and the large intestine is about 5 feet long. Both are situated in the abdomen and form a continuous tube from the stomach to the anus. Continue Reading.