Practice question · Numerical answer
Microvilli increase the absorptive surface of an intestinal cell about 20-fold. If the flat surface would be 50 µm², what is the effective area in µm²?
Hints
- Multiply the flat area by the amplification factor.
- Compute 50 x 20.
Show the answer
1000 (answers within ±10 count)
Why
µm². Combined with villi and circular folds, this amplification is how a few metres of intestine achieve an absorptive area of roughly 200 m².
Practise Epithelial Tissue and Glands
The app has 3 more questions on this lesson, and keeps your place in the course. Biology I is free to start.
More questions on Epithelial Tissue and Glands
- Which features are characteristic of epithelial tissue?
- Sort each epithelium by whether its structure favours exchange or protection.
- Why are endocrine glands richly supplied with blood vessels while the epithelium they developed from is not?
- The outer layers of the epidermis consist of dead cells.
- Epithelial sheets are strictly avascular, yet they exhibit high metabolic activity across surfaces like the…
- Match each gland type to how it delivers its secretion.
- Complete the classification of epithelia.