Which structure increases the surface area for absorption in the small intestine

Practice Questions

Q1
Which structure increases the surface area for absorption in the small intestine? (2022)
  1. Villi
  2. Microvilli
  3. Plicae circulares
  4. All of the above

Questions & Step-by-Step Solutions

Which structure increases the surface area for absorption in the small intestine? (2022)
  • Step 1: Understand that the small intestine is where nutrients from food are absorbed into the body.
  • Step 2: Learn that the surface area of the small intestine is important for absorbing as many nutrients as possible.
  • Step 3: Identify the structures that help increase the surface area: villi, microvilli, and plicae circulares.
  • Step 4: Know that villi are tiny finger-like projections that stick out from the walls of the small intestine.
  • Step 5: Understand that microvilli are even smaller projections on the villi, further increasing the surface area.
  • Step 6: Recognize that plicae circulares are folds in the lining of the small intestine that also help increase surface area.
  • Step 7: Conclude that all these structures work together to maximize the surface area for absorption in the small intestine.
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