The different forms in which proteins digestion are taken in diet are as follows: 1. Gastric Juice 2. Pancreatic Juice 3. Succus Entericus 4. Nucleoprotein 5. Caseinogen (Milk) 6. Collagen and Gelatin 7. Mucin. 1. Digestion in the Gastric Juice: Pepsin is the proteolytic enzyme of gastric juice. It acts with the help of HCI and converts all digestible proteins [...]
The various humoral (chemical) factors controlling the different secretions in the gastro-intestinal tract may be summarised as follows: 1. For Gastric Secretion: i. Gastrin- Responsible for gastric phase. ii. A chemical substance may be a hormone or secretagogue - Responsible for intestinal phase. iii. Enterogastrone- Inhibits gastric secretion. 2. For Pancreatic Secretion: i. Secretin- Main chemical stimulus. ii. Pancreozymin. iii. [...]
The following types of movements are found in the human small intestine: 1. Rhythmic segmentation or Ludwig's pendulum 2. Peristalsis. Type # 1. Rhythmic Segmentation: Nature: These are rings of contraction occurring at regular space of intervals in which a portion of the intestine is divided into segments. The contraction is followed by relaxation. The contraction takes place at the [...]