NEET Biology Digestive System Chapter Notes

Download the latest NEET Biology Digestive System Chapter Notes in PDF format. These Full Course Digestion and Absorption revision notes are carefully designed by expert teachers to align with the 2025-26 syllabus. These notes are great daily learning and last minute exam preparation and they simplify complex topics and highlight important definitions for Full Course students.

Chapter-wise Revision Notes for Full Course Digestion and Absorption Digestion and Absorption

To secure a higher rank, students should use these Full Course Digestion and Absorption Digestion and Absorption notes for quick learning of important concepts. These exam-oriented summaries focus on difficult topics and high-weightage sections helpful in school tests and final examinations.

Digestion and Absorption Revision Notes for Full Course Digestion and Absorption

 

INTRODUCTION
 
To perform various functions of the body energy is required, which is obtained from food. The process of conversion of complex food material in to simple and diffusible forms by hydrolysis is termed as Digestion.
NEET Biology Digestive System Chapter Notes
 
The alimentary canal is tubular structure which extends from mouth to anus. It develops from ectoderm & endoderm.
Ectoderm – up to hard palate
Endoderm – from soft palate to rectum
Ectoderm – from anal canal to Anus
The alimentary canal is divided into following parts–
(1) Mouth and Buccopharygeal cavity
(2) Oesophagus
(3) Stomach
(4) Intestine
 
NEET Biology Digestive System Chapter Notes1
 
 
(1) Mouth and Buccopharyngeal Cavity – Mouth is a horizontal transverse slit like aperture which is surrounded by upper and lower lip. Orbicualaris oris voluntary muscles. are found in lips. Sebaceous glands
are found on the outer part of lip. Serous glands are found on the inner part of lip. Serous glands is the modification of mucus glands. Its secretory substance is watery.
In Rabbit a small cleft is found in the middle part of upper lip, such type of lip is called as Hare lip
 
NEET Biology Digestive System Chapter Notes2
 
(i) Buccal vestibule – It is a peripheral part which, present between the gums and cheeks where the food is stored temporarily for some time
(ii) Oral cavity – It is inner & central part which, is surrounded by upper and lower Jaw. Lined by stratified squamous epithelium. Upper Jaw is Fixed and Lower jaw is Movable.
The roof of oral cavity is called as Palate. This palate is horizontal partition which situated between oral cavity and nasal chamber
 
NEET Biology Digestive System Chapter Notes3
 
Palate is differentiated into two parts :
 
(i) Hard Palate –
It is the anterior part of the palate. It is made up of Maxilla and palatine bone in human. But in Rabbit it is made of Pre-maxilla, maxilla, palatine bone.
On the ventral surface of hard palate, some projection or transverse ridges are present which are called as palatine rugae.
These rugae prevent slip out of the food from buccal cavity during mastication.
These rugae are well developed in carnivorous animals.
In rabbit, one pair opening of Nasopalatine duct is present at the anterior part of hard palate, these connect the buccal cavity to the Nasal passage. In Rabbit some olfactory receptor are also found in
nasopalatine duct which are called as Jacobson's organ. It makes them aware of the smell of food while chewing.
 
NEET Biology Digestive System Chapter Notes4
 
Reproduction in Flowering Plants
NEET Botany Reproductive Morphology Chapter Notes

NEET Full Course Digestion and Absorption Digestion and Absorption Notes

Students can use these Revision Notes for Digestion and Absorption to quickly understand all the main concepts. This study material has been prepared as per the latest NEET syllabus for Full Course. Our teachers always suggest that Full Course students read these notes regularly as they are focused on the most important topics that usually appear in school tests and final exams.

NCERT Based Digestion and Absorption Summary

Our expert team has used the official NCERT book for Full Course Digestion and Absorption to design these notes. These are the notes that definitely you for your current academic year. After reading the chapter summary, you should also refer to our NCERT solutions for Full Course. Always compare your understanding with our teacher prepared answers as they will help you build a very strong base in Digestion and Absorption.

Digestion and Absorption Complete Revision and Practice

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