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. […]
Biology Notes on Defecation
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Small Intestine and Large Intestine (With Diagram)
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In this article we will discuss about the small and large intestine of digestive system. Small Intestine of Digestive System: Motility of Small Intestine: The movements of small intestine are brought about by the smooth muscle present in its wall. a. Wall of small intestine has an outer longitudinal and an inner circular layer. b. […]
Gastric Juice: Composition and Enzymes (With Diagram)
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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 […]
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