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Most digestion and absorption of food ta...

Most digestion and absorption of food takes place in
(a) Stomach
(b) Caecum
(c) Small intestine
(d) Large intestine

A

Stomach

B

Caecum

C

Small intestine

D

Large intestine

Text Solution

AI Generated Solution

The correct Answer is:
To determine where most digestion and absorption of food takes place, let's analyze each option step by step: 1. **Option A: Stomach** - The stomach is primarily responsible for the mechanical and chemical breakdown of food. It secretes gastric juices that help digest proteins and kill bacteria. - However, the stomach is not the main site for absorption; it mainly prepares food for further digestion in the small intestine. **Hint:** Think about the role of the stomach in digestion versus absorption. 2. **Option B: Caecum** - The caecum is a part of the large intestine and is involved in the fermentation of undigested materials. It plays a minor role in absorption, particularly of water and salts. - However, it is not a significant site for digestion or absorption compared to other parts of the digestive system. **Hint:** Consider the function of the caecum in the digestive process. 3. **Option C: Small intestine** - The small intestine is the primary site for digestion and absorption. It consists of three parts: duodenum, jejunum, and ileum. - The duodenum is where most of the chemical digestion occurs, aided by enzymes from the pancreas and bile from the liver. - The presence of microvilli in the small intestine significantly increases the surface area, enhancing the absorption of nutrients into the bloodstream. **Hint:** Focus on where the majority of nutrient absorption occurs. 4. **Option D: Large intestine** - The large intestine primarily absorbs water and electrolytes and is involved in the formation of feces. It does not play a significant role in the digestion of food. - Therefore, it is not the main site for digestion and absorption. **Hint:** Reflect on the primary functions of the large intestine. **Conclusion:** After analyzing all options, the correct answer is **(c) Small intestine**. This is where most digestion and absorption of food takes place.
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