What prevents bacteria and materials in the large intestine from flowing backward into the ileum of the small intestine?
A)pyloric sphincter
B)gastroesophageal sphincter
C)ileocecal valve
D)circular folds

Question

Quizplus · Accepted Answer

The ileocecal valve is a muscular valve located at the junction of the ileum and cecum that prevents the contents of the large intestine, including bacteria and materials, from flowing backward into the small intestine. The pyloric sphincter is located between the stomach and the small intestine, while the gastroesophageal sphincter is located between the esophagus and the stomach. Circular folds, also known as plicae circulares, are tiny folds of mucous membrane in the small intestine that help increase surface area for absorption.

What Prevents Bacteria and Materials in the Large Intestine from Flowing