Absorption
Absorption: Overview
In this topic, we will learn about the phenomenon of adsorption. It explains the terms adsorbat, adsorbent, positive and negative adsorption. It also discusses the difference between adsorption and absorption.
Important Questions on Absorption
In the villi of ileum the absorption of lipids takes place through
Lacteals absorb and transport large molecules, fats, and lipids in the digestive system mainly in the form of lipoproteins.
Lacteals are lymphatic capillaries found in the large intestine.
What are the roles of lacteal?
The function of finger like projections called “villi” in small intestine is to :
Define lacteal.
Describe the mechanism of absorption of food.
Which two among the following four statements are incorrect?
- Fructose is generally absorbed by simple diffusion.
- The digestive wastes, solidified into coherent faeces in the rectum initiate an endocrinal action causing an urge or desire for its removal.
- The food mixes thoroughly with the acidic gastric juice of the stomach by the churning movements of its muscular wall and is called the chyme.
- The secretions of the brush border cells of the mucosa along with the secretions of the goblet cells constitute the succus entericus.
_____ is the last longest part of small intestine.
The diagram represents a section through the small intestine.
What is the role of the structure labelled X?
