Q. Which one of the following statements are correct?
I. Frenulum is the fold by which tongue is attached to the floor of mouth or oral cavity
II. Lower surface of the tongue has little projection which bears taste buds
III. Pharyn is the common passage for food and air
IV. Sphincter of oddi guards and regulates the opening of stomach into duodenum
V. Colon has 3 parts an ascending, a transverse and a descending part and the later opens into the rectum

 1705  198 Digestion and Absorption Report Error

Solution:

The upper surface of tongue has small projections called papillae which bear taste buds. Opening of stomach into duodenum is guarded by pyloric sphincter, while oddi sphincter guards the opening of hepatic ampulla into duodenum