Which combining form means 'mouth' and is used as a prefix in many terms?

Which combining form means 'mouth' and is used as a prefix in many terms?

• A. Palpebr-
• B. Oto-
• C. Stoma-
• D. Vesic-

Answer: (C)

This item tests recognizing the form that means mouth and shows up at the start of many terms. The mouth-related combining form is stoma-, with the connecting form stomat- used before vowels. It appears in terms like stomatitis (inflammation of the mouth) and stomatology (study of the mouth). The other options refer to different body parts: palpebr- relates to eyelid, oto- to the ear, and vesic- to the bladder or a blister. Because stoma- directly denotes mouth and is widely used as a prefix, it’s the best choice.

This item tests recognizing the form that means mouth and shows up at the start of many terms. The mouth-related combining form is stoma-, with the connecting form stomat- used before vowels. It appears in terms like stomatitis (inflammation of the mouth) and stomatology (study of the mouth). The other options refer to different body parts: palpebr- relates to eyelid, oto- to the ear, and vesic- to the bladder or a blister. Because stoma- directly denotes mouth and is widely used as a prefix, it’s the best choice.