Final answer:
Mickel's diverticulum originates from a remnant of the vitelline duct connected to the yolk sac. This is an abnormality in the digestive tract development resulting from a failure in the degeneration of the duct during embryogenesis.
Step-by-step explanation:
Mickel's diverticulum is derived from the yolk sac, specifically from a remnant of the vitelline duct or omphalomesenteric duct, which connects the embryonic gut to the yolk sac. This structure usually degenerates and disappears during development, but when it does not, it can result in Mickel's diverticulum.
This condition is related to another term known as diverticulosis, where multiple pouches, diverticula, form in the wall of the large intestine. However, a diverticulum can also form in the small intestine as in the case of Mickel's diverticulum. When these pouches become infected or inflamed, the condition is referred to as diverticulitis. Knowledge of embryology is essential here, as the diverticulum arises from a section of the endoderm, the innermost embryonic germ layer that is also the precursor to much of the digestive system.