And this entire convoluted region is our small intestine. So basically this and this section is part of our small intestine. Now, specialized types of accessory organs such as the liver, the gallbladder and the pancreas basically work together to create and secrete special types of enzymes, proteolytic enzymes that break down our carbohydrates proteins as well as fats. And they also secrete special types of substances that ultimately are secreted into the small intestine and that increases the PH of our small intestine and that ultimately activates the special types of proteolytic enzymes that are involved in the breakdown of our food products inside the small intestine. So the liver, pancreas and gallbladder all play a role in producing and secreting special enzymes and other substances into our small intestine. And we'll discuss what these are in the next several lectures when we focus on the small intestine.