The combining form enter/o means which body part?

• A. Small intestine
• B. Large intestine
• C. Stomach
• D. Esophagus

Answer: (A)

Combining forms tell us which body part a term relates to. enter/o comes from the Greek enteron meaning intestine, and in medical terminology it most often points to the small intestine. That’s why terms built with enter/o are linked to the small intestine rather than the large intestine. The large intestine is indicated by colon/o or col/o, the stomach by gastr/o, and the esophagus by esophag/o. So enter/o specifically refers to the small intestine.