Multiple choice

The epithelia of body cavities that are connected to the external environment protect themselves by

  1. microvilli present on the cells of topmost layer of the epithelia

  2. secreting large amount of mucus by numerous mucus-secreting cells

  3. secreting various antimicrobial compounds

  4. None of these

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The epithelia of body cavities that are connected to the external environment protect themselves by secreting large amount of mucus by numerous mucus-secreting cells.