Signs of Kidney Failure The early indications of failing kidneys include a marked increase in water consumption (polydipsia) and in urination (polyuria); weight loss; apparent decline in appetite; and, in some cases, occasional vomiting. If these signs are observed, the owner should seek veterinary consultation at once.
Function: Chemical digestion of food and absorption of nutrients into your blood. Longest section of your digestive tract. Your small intestine is around five metres long, making it the longest section of your digestive tract. Although it is longer than your large intestine it has a smaller diameter. This is why it's called the small intestine.
The small intestine is the section of your digestive tract where the majority of food digestion and nutrient absorption takes place. To understand how digestion and absorption take place in the small intestine, it is important to first understand the structure or anatomy of the organ.