Q. 224.7( 6 Votes )

Name the main organs of the human digestive system in the order they participate in the process of digestion. Describe how digestion of carbohydrates and proteins take place in our body.

Answer :

Main organs of the human digestive system participate in the following order in process of digestion:

Mouth, oesophagus, stomach, small intestine, large intestine, rectum and anus.


Digestion of carbohydrates takes place in following manner: Major carbohydrates that we take are starch, sucrose, lactose.


Digestion of carbohydrates takes place in mouth and stomach and in following steps:


When food is chewed it is mixed with the ptyalin secreted in mouth and break down carbohydrates in small products. Only 5% of digestion takes place here.


Then digestion continues in stomach where gastric and acidic secretions of stomach cause 30 to 40% of digestion.


As partially digested food empties from stomach to duodenum further digestion is caused by pancreatic amylase which converts them into small polymers.


Final digestion is caused by small intestine where villi contain enzymes like sucrase, lactase, maltase and dextrinase which cause their final digestion by converting them into constituent monosaccharides.



Digestion of proteins takes place in the following manner:


Digestion of proteins begins in stomach and takes place in following manner:


Pepsin enzyme is responsible for the protein digestion in stomach. It is activated at acidic pH and cause little bit digestion of proteins thereby converting them into small molecules.


Further digestion takes place by pancreatic juices. Pancreatic enzymes like trypsin, chemotrypsin are release by pancreas in small intestine where these enzymes broke down protein further into very small molecules.


Further peptidase of small intestine break down small molecules of protein further and absorption takes place and digestion of proteins gets completed.



Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Champ Quiz | Examining the Life ProcessesChamp Quiz | Examining the Life ProcessesChamp Quiz | Examining the Life Processes43 mins
Defining Life and Life ProcessesDefining Life and Life ProcessesDefining Life and Life Processes57 mins
Autotrophic NutritionAutotrophic NutritionAutotrophic Nutrition59 mins
Pumping of BloodPumping of BloodPumping of Blood43 mins
Transportation in Plants & AnimalsTransportation in Plants & AnimalsTransportation in Plants & Animals38 mins
Genius  Quiz | Heartless PlantGenius  Quiz | Heartless PlantGenius Quiz | Heartless Plant49 mins
From single cell to babyFrom single cell to babyFrom single cell to baby45 mins
Champ Quiz | Dental CariesChamp Quiz | Dental CariesChamp Quiz | Dental Caries31 mins
Quiz | Practising DiagramsQuiz | Practising DiagramsQuiz | Practising Diagrams44 mins
Know About Excretory SystemKnow About Excretory SystemKnow About Excretory System46 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses
RELATED QUESTIONS :