Subscribe now to access pointwise, categorized & easy to understand notes on 304 key topics of NEET (National Eligibility cum Medical Entrance Test) Biology covering entire 2017 syllabus. All the updates for one year are also included. View Features or choose a topic to view more samples.

Rs. 400.00 or

Introduction and functional organization of Human Digestive System

The gastro-Intestinal Tract (GIT) is designed to provide nutrition to the body. It forms the gate through which nutritive substances enter in the body, they are digested, nutrients are absorbed and unusable substances are removed from the body. It is a tubular structure open at both the ends. Total length of GIT is about 10 meters (30 feet in adults). Food enters from mouth it is chewed and mixed

… (187 more words) …

Subscribe & login to view complete study material.

Immune System of GIT

GIT is connected to the exterior at both the ends the mouth and the anal opening. Thus it makes a channel through which organisms can enter inside. The invading organisms are destroyed by immune system, it includes;

  • Peyer’s patches; these are aggregations of lymphoid tissue in the submucosa.

  • Diffuse population of immune cells; these cells are called immunocytes. They are present in the mucosa and submucosa throughout the GIT.

… (95 more words) …

Subscribe & login to view complete study material.

f Page
Sign In