Medical student. Biology is my strongest subject.

Ananya Singh

This is about nutrients in general, their types and sources. All the metabolic processes involved in digestion and assimilation.

This section is a one-stop shop for all Medical aspirants. Be thorough with these powerful courses that will give you the right strategy for preparation, and help you crack any pre-medical exam.

NEET UG

English

Nutrition in Human Body

Digestion & Absorption

Human Physiology

Biology

IITJEE, NEET UG and Foundation

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Test Preparation

Digestion refers to the processes governing the breakdown of larger food molecules into simpler smaller forms with the help of digestive enzymes released by associated glands. Water and roughage help in easy passage of food down the gastrointestinal tract. Nutrients are the organic and inorganic constituents of food that need to be digested into our body. They play a major role in all the metabolic processes in our body.

Digestion - A General Overview

Nutrition refers to the general food intake, nutrient absorption, digestion and their metabolism in the body. Nutrients include fats, proteins, carbohydrates , vitamins and minerals. Roughage and water are the additional constituents that form the basis of balanced diet and their absence leads to constipation.

Vitamins are organic nutrients essential for various metabolic reactions. They include fat soluble and water soluble forms. Fat soluble forms are A, D, E and K. Water soluble forms are C and B complex forms-(B1, B2, B3, B5, B6, B7, B9, B12). Deficiency of each vitamin can manifest in form of certain abnormal symptoms. Likewise their excess is harmful. So their consumption should be properly regulated.

Vitamins

Structural organisation of alimentary canal is such that digestion and absorption can easily occur. Intestinal modifications like villi increase surface area for absorption. Functions of intestine are not only limited to digestion and absorption. Fluid and electrolyte balance, immunity, harbouring intestinal flora are certain other functions that are very relevant to our body.

Structural and Functional Organisation of GIT

Carbohydrate digestion starts in mouth itself with the help of ptyalin. Apart from that teeth help in mastication of food. Humans have diphyodont, heterodont teeth.
Peristaltic movements usher the food bolus from oropharynx to the stomach via oesophagus.

Mouth, Pharynx and Oesophagus

Gastrointestinal hormones are those hormones released by cells of GI tract and either stimulate or inhibit secretion of enzymes in the gut, help in proper digestion and control gastric motility. Gastrin secreted by G-cells of stomach stimulates parietal cells of stomach to secrete HCl. Thus, hypergastrinaemia leads to peptic ulcer.

Gastrointestinal hormones

Cholecystokinin is a gastrointestinal hormone released by I cells and stimulates release of bile (choleretic) and pancreatic juice in general.

Cholecystokinin-Pancreozymin

Secretin family is one of the categories of gastrointestinal hormones and includes secretin, glucagon, GIP & VIP.

The Secretin Family

Gastrointestinal hormones are classified into following families :
1) Gastrin family.
2) Secretin family. 
3) other polypeptides.
Now, the secretin family includes secretin, GIP, VIP and glucagon. Glucagon is a product of preproglucagon. Also GLP is also produced from the same. Glucagon is a hyperglycaemic hormone. It is antagonistic to insulin (hypoglycaemic hormone). Deficiency in insulin secretion or defect in it's action leads to diabetes mellitus.

Secretin family- VIP & Glucagon

Tamanna Chaudhary

The course covers all the different parts of Alimentary canal providing information on each one of them with the help of diagrams.

Alimentary Canal and It's Histology for Pre-Medical Exams

The course explains the Structure and function of various digestive glands with the help of beautiful diagrams.

Digestive Glands: Pre-Medical Exams

An MBBS from Prestigious medical college MAMC, Mentored AIR 78 (NEET 2022), Dr. S.K Singh is a star in the NEET test-prep domain.

Dr S K Singh

Discuss aboit important Topics from Digestive System For NEET and AIIMS 
Highly Yield Topics

(Hindi) Revision Series For NEET and AIIMS | Digestion and Absorption

M.Sc. Botany(Gold Medalist ),B.Ed & DCA
12+ Years Experience , mentored 10K+ students
Cleared UPPSC,PGT,TGT,CET Exam
Ex-Bio Lecturer in GIC


Juhi Mishra

All about human physiology like Digestion and Absorption,Breathing and Exchange of Gases, Excretion and Osmoregulation,Movement and Locomotion,Neural Control and Coordination, Chemical Control and Coordination( Endocrinology).

(Hindi) Human Physiology

This Course include concept of human respiration, mechanism of breathing, pulmonary ventilation, pulmonary volumes and capacities, Exchange of respiratory gases, Regulation of respiration, Human Respiratory Disorders

(Hindi) Breathing And Exchange Of Gases (Human Respiration): Pre-Medical (NEET and AIIMS)

Sourav Sharma

In this course , I will discuss about Blood and it's elements. I hope you will like the course and this course will help you to build some concepts.

Lessons

9 lessons • 1h 26m

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Digestion - A General Overview

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Nutrition in Human Body

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Vitamins

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Structural and Functional Organisation of GIT

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Mouth, Pharynx and Oesophagus

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Gastrointestinal hormones

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Cholecystokinin-Pancreozymin

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The Secretin Family

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Secretin family- VIP & Glucagon