Microvilli of intestinal epithelium are similar in function with Typhlosole in earthworm, Malpighian tubules in cockroach, Intestinal caecum in earthworm, Hepatic caecum in cockroach.

Microvilli increases absorptive surface area. Typhlosolar region in earthworm is the middle region of the intestine in which the mid-dorsal wall of the intestine is thrown into a longitudinal fold which is known as typhlosole. The typhlosole increases the absorptive surface of the intestine.