There are five digestive juices; saliva, gastric juice, pancreatic juice, succus entericus (intestinal juice) and bile. The necessity for so many digestive juices is that -(a) One juice does not contain all the enzymes necessary for digesting all the different types of foodstuffs. For instance, saliva contains only carbohydrate-splitting enzymes; whereas gastric juice contains both fat- and protein -splitting enzymes [...]
In this essay we will discuss about the digestive system in humans. After reading this essay you will learn about:- 1. Organs of Digestive System 2. Accessory Glands for Digestion of Foods. Essay # 1. Organs of Digestive System: Digestion means simplification of complex foods. It is the process of breaking various foodstuff into simple products. The complex foods like [...]
Saliva is the first digestive juice to come in contact with food. Saliva is secreted by three major salivary glands namely: i. Parotid ii. Submandibular (sub-maxillary) iii. Sublingual. Apart from these, there are minor salivary glands in the floor of the mouth, pharynx, tongue and cheeks. Composition of Saliva: On an average, the rate of secretion of saliva is about [...]