Tag Archives | Digestive System

Secretions in the Gastro-Intestinal Tract | Digestive System | Human | Biology

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. [...]

By |2017-07-27T08:05:36+00:00July 27, 2017|Digestive System|Comments Off on Secretions in the Gastro-Intestinal Tract | Digestive System | Human | Biology
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Movements of Human Small Intestine: 2 Types | Digestive System | Biology

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 [...]

By |2017-07-27T08:05:36+00:00July 27, 2017|Digestive System|Comments Off on Movements of Human Small Intestine: 2 Types | Digestive System | Biology
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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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