In this article we will discuss about the composition and enzymes of gastric juice. Composition of Gastric Juice: i. Gastric juice is the secretion of gastric glands. ii. Total amount secreted: 1, 200-1.500 ml per day. iii. Night secretion (during sleep) alone is 400 ml/day. iv. Acidity of gastric juice: 40-60 mEq/liter v. pH: 0.9-1.5 vi. Water content—99.45% vii. Total [...]
In this article we will discuss about:- 1. Methods to Study Gastric Secretion 2. Phases of Gastric Secretion and their Regulation 3. Factors 4. Depressants 5. Other Hormones 6. Tests for Gastric Secretory Function in Man. Methods to Study Gastric Secretion: There are several methods available in experimental animals and in man to collect gastric juice, enabling us to study [...]
Defecation is a reflex which results in the expulsion of feces and is normally under voluntary control in adult. In infants, it is purely a reflex action. The desire for defecation is felt when the finally formed feces enter the rectum. Continuous escape or dribbling of feces is prevented by presence of two sphincters. a. Internal anal sphincter: Formed of [...]