Epithelial cells of the intestine involved in food absorption have on their surface :
- Pinocytic vesicles
- Phagocytic vesicles
- Zymogen granules
- Micro-villi
The Correct Option is D
Solution and Explanation
Microvilli are tiny, finger-like projections on the surface of the intestinal epithelial cells that significantly increase the surface area available for absorption of nutrients from digested food. These structures are essential for efficient nutrient absorption in the small intestine.
So, the correct option is (D): micro-villi
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Concepts Used:
Digestion and Absorption - Alimentary Canal
Digestion can be defined as the process of breakdown of large, insoluble and complex food molecules into smaller ones for its absorption and circulation in the body. This process involves the usage of a variety of digestive fluids and enzymes, including saliva, mucus, bile and hydrochloric acid, among others.
Read More: Digestion and Absorption
The alimentary canal is mainly referred to as the pathway by which food enters our body and moves out through the anus after digestion. It is a tube-like structure that starts from the mouth and ends in the anus. The alimentary canal plays a primary role in human digestion and is also termed as the digestive tract.
Peristalsis is a series of wave-like muscle contractions that move food through the digestive tract.