Science — AI-generated practice question

The small intestine is specially designed for absorption in the following ways:

1. Length: It is the longest part of the alimentary canal, providing a long surface for absorption.
2. Villi: The inner lining has numerous finger-like projections called villi, which greatly increase the surface area for absorption.
3. Blood supply: The villi are richly supplied with blood vessels, which absorb the digested food (glucose, amino acids, fatty acids, glycerol) and transport it to all cells of the body.

Thus, large surface area and rich blood supply make the small intestine highly efficient for absorption.

Source: Chapter 5, Section 5.2.4 – Nutrition in Human Beings

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Examiners expect three clear points here: (1) villi — name and describe them, (2) increased surface area, and (3) rich blood vessel supply for transport. The word villi is a must. Avoid writing about digestion here — the question is specifically about absorption design. One mark each for the three features.