Which combining form means intestines?

• A. Enter-
• B. Hepat-
• C. Arthr-
• D. Cardi-

Answer: (A)

The main idea here is identifying the combining form that names a body part. Enter- (or enter/o) is the combining form for intestines, coming from the Greek enteron. It appears in terms like enteritis (inflammation of the intestines) or enteric (relating to the intestines). This makes it the correct choice because it directly denotes the intestines. For contrast, hepat- means liver, arthr- means joint, and cardi- means heart, so those others don’t fit the meaning asked for in this question.