Q. Which one of the following statements is/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. Pharynx 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
A) I, II and III are correct
B) IV and V are correct
C) I, II, III, IV and V
D) I, III and V are correct
Explanation
The upper surface of tongue has small projections called papillae. These papillae can be divided into four types: circumvallale or vallale papillae, fungiform papialle, filiform papillae and foleate papillae. Out of four, filiform papillae lacks taste buds, while rest all three have taste buds. Opening of stomach into duodenum is guarded by pyloric sphincter, while oddi sphincter guards the opening of hepatic ampulla into duodenum
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.