Question of the Day

The large intestine is the site at which certain nutrients are absorbed, but it is the kidneys that are responsible for removing urea, a product of protein degradation, from the bloodstream. The normal function of the esophagus is to move food by peristalsis into the stomach, where it is acidified and the major digestive processes begin. The small intestine then serves as the major site for completing digestion using enzymes and other molecules produced by the gall bladder and liver to allow the absorption of nutrients.