Mention two ways in which the ileum of a mammal is adapted for the absorption of digested food.

Explanation

To answer the question about how the ileum of a mammal is adapted for the absorption of digested food, we can outline the following steps:

### Step-by-Step Solution:

1. **Presence of Villi**: The ileum has numerous finger-like projections called villi. These projections increase the surface area of the intestinal lining significantly. A larger surface area allows for more efficient absorption of nutrients from the digested food.

2. **Microvilli on Epithelial Cells**: Each villus is lined with epithelial cells that have even smaller projections known as microvilli. These microvilli further enhance the surface area available for absorption, allowing for an even greater amount of nutrients to be absorbed into the bloodstream.

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