The combining form for appendix is which?

• A. appendic/o
• B. end-
• C. Lith/o
• D. Rhin/o

Answer: (A)

The idea being tested is how medical terms are built from a combining form that names a body part. For the appendix, the correct combining form is appendic/o. The root appendic- comes from the Latin for appendix, and the linking vowel o is used to connect it to suffixes, giving terms like appendicitis (inflammation of the appendix) and appendectomy (removal of the appendix). The other options don’t refer to the appendix: end- is a prefix related to inside or end, Lith/o means stone, and Rhin/o means nose.