Which body region is described by the prefix Celio-?

• A. Spinal column
• B. Tail
• C. Ear drum
• D. Abdomen

Answer: (D)

Celio- denotes the abdomen, the belly region. This combining form is used for terms related to the abdominal area, such as those describing abdominal structures or procedures. That makes the abdomen the body region described by Celio-. Terms for other regions use different prefixes, for example, the spinal column is linked to vertebr- or spin-, the tail to caud- or caudo-, and the ear drum to tympan-; none of these use the Celio- prefix.