Question
Where are most nutrients absorbed in the digestive system?
A colon
B oesophagus
C small intestine
D stomach
▶️Answer/Explanation
Ans C
The correct answer is C, because :
Absorption is the process of absorbing digested food molecules into blood stream.
In our entire digestive system, Small intestine plays a major role in absorption as it is vast in length and its structure is structured in that way.
- Colon – it helps in passage of stools to rectum and some water gets absorbed
- Oesophagus – it helps in passage of food bolus from mouth to stomach
- stomach – it helps in digestion through HCl but not the absorption
Question
The diagram shows part of the small intestine and an associated blood vessel.
What is represented by the arrow?
A absorption of sugars
B assimilation of sugars
C digestion of sugars
D ingestion of sugars
▶️Answer/Explanation
Ans A
The correct answer is A, because :
Small intestine is responsible for digestion and absorption of food
DIgestion is digestion of food and it gets passed into other parts, whereas absorption is movement of digested food molecules into blood vessels.
In image, it represents, absorption of food from small intestine into blood.
Question
In which part of the alimentary canal is the most water absorbed?
A) colon
B) rectum
C) small intestine
D) stomach
▶️Answer/Explanation
Ans: C
The correct answer is C, because :
Because of large, length of small intestine it provides large surface for absorption of water.
Whereas, colon and rectum are also water absorption parts but not much as small intestine
In stomach, no water absorption is seen.
Question
Where is most digested food absorbed?
▶️Answer/Explanation
Ans: C
The correct answer is C, because :
A – stomach
B – Pancreas
C – small intestine
D- large intestine
Small intestine is large in length, but its name is given according to diameter of lumen and because of its large length its place of most digested food absorbed.