Question

Compare and contrast the mammalian stomach and small intestine and frog duodenum.

Answer 1

Though most components of the human and frog digestive system Sinilar, there differences in terons of anatomy as well as function. Generally frog do are some not drink water, and the absorption of water to the body occurs thought the skm. Froges have a shorter small intestine than human. The two part of the small intestine of frogs are the duodenum and ileum. However, human have three part of their small intestine ; duodenum, jejumum , and ileum. 1 In frogs, the duodenum involves in the digestion of le carbohydrate , proteins, lipids, and nucleic acid. The absorption of nutrients accurs in the ileum. However in human , absorpton of nutrients happens in the jejunum, t he Human stomach In human stomach and many other animals, the stomach is located between the oesophagus and the small intenstine. It secretes digestive enzymes and gastric acid to aid in food digestion. The pyloric sphincter controls the passage of partially digested food from the stomach into the duodenum where peristalsis takes over to move this through the rest of the intestines.

Small intestine in human The small intestine has three distinct regions. the delodehum, sejunum and ileum. The duodenum, the shortest , is where preparation for absorption throught small finger like protrusions called villi begins the jejunum is specralized for the absorption through its lining by enterocytes, small nutrient particles which have been previously digested by enzymes in the duodenum. The main function of the lleum is to absorb vitamin B12 bile salts, and whatever products of digestion were not absorbed by the jejunum. Frogs duodenum The duodenum of both frogs and human are the first sections of the small intestine and it is located immediately after the Stomach. The first straight portion of the small intestine is called the duodenum,