Question

i) Name the largest part of the alimentary canal.
ii)How is the small intestine designed to absorb digested food?

Answer 1

Answer:

1. small intestine
2. small intestinechas many finger like projection called villi.villi increase the surface for more efficient food absorption within these vili,msny blood vessels are present that absorb the digested food and carry it to the blood stream

Answer 2

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i) Name the largest part of the alimentary canal.

Ans - In the entire alimentary canal, the Small Intestine is the largest part which is around 6 m - 7.5 m and narrow with a average diameter of 4 cm. This looks like a tubular coiled pipe that runs in the abdomen. It is differentiated into three sub-parts:-

• Duodenum
• Jejunum
• Ileum

The inner wall of Intestine consists of many finger like projectctions called villi and more smaller microvilli, which increases the surface area for the absorption of food.

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ii) How is the small intestine designed to absorb digested food?

Ans- The main function of Small Intestine is the absorption of food. The absorption of digested food occurs mainly through the surface of villi and microvilli. There are nearly 3 to 4 million villis present in our Intestine. The Villi have bllod capillaries and lymph vessels.

The wall of Small Intestine also have many intestinal glands which helps in the final broke down or digestion of all kinds of nutrients like fats, peptides, lactose, maltose etc. The glands secrets enzymes like Intestinal Amylase, Intestinal Maltase etc.

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• Diagram of Small intestine(green, yellow, orange)
• Diagram of Villi (finger like projections)

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