Match the following columns.

Column I

Column II

A. Duodenum

B. Epiglottis

C. Glottis

D. Caecum

1. A cartilaginous flap

2. Small blind sac

3. 'C’ shaped structure emerging from the stomach.

4. Opening of wind pipe

Codes

1. A-1, B-2, C-3, D-4

2. A-4, B-3, C-2, D-1

3. A-3, B-1, C-4, D-2

4. A-2, B-4, C-1, D-3

(c) Duodenum is a 'U'-shaped structure emerging from the stomach.
Epiglottis is a cartilaginous flap that prevents the entry of food into the glottis.
Glottis is the openirig of the wind pipe.
Caecum is a small blind sac which hosts some symbiotic microorganisms that helps in the digestion process.