Tag Archives | Digestive System

Movements of Alimentary Canal | Digestive System | Human | Biology

The presence of muscular tissue in the alimentary canal indicates that some sort of movements must be present in the gastro-intestinal tract. As a matter of fact, the alimentary canal does move, its different parts showing different kinds of movements. Reason for Movement: If one recollects the chief functions of the digestive tract, such as digestion, secretion, absorption, defecation etc., [...]

By |2017-07-27T08:05:36+00:00July 27, 2017|Digestive System|Comments Off on Movements of Alimentary Canal | Digestive System | Human | Biology

Act of Swallowing in Human Body (With Diagram) | Digestive System | Biology

Deglutition or swallowing is probably a reflex phenomenon. Higher centres facilitate this reflex. Once aroused, the swallowing centre in the medulla evokes the complete act of swallowing by discharge through six nuclei and the motor neurones. This reflex act occurs in three stages: (1) First or oral, (2) Second or pharyngeal, and (3) Third or oesophageal (Fig. 9.46). (1) First [...]

By |2017-07-27T08:05:36+00:00July 27, 2017|Digestive System|Comments Off on Act of Swallowing in Human Body (With Diagram) | Digestive System | Biology

Gastric Secretion: Mechanism and Hormones | Digestive System | Biology

In this article we will discuss about:- 1. Mechanism of Gastric Secretion 2. Hormones of Gastric Secretion 3. Effects of Various Chemicals and Drugs 4. Investigation. Mechanism of Gastric Secretion: The mechanism of gastric secretion has been chiefly studied on animals. Some direct evidence has been obtained in man, from cases of accidental gastric fistula through which gastric juice could [...]

By |2017-07-27T08:05:35+00:00July 27, 2017|Gastric Secretion|Comments Off on Gastric Secretion: Mechanism and Hormones | Digestive System | Biology
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