Extremity prefix?

Extremity prefix?

• A. Ankyl/o
• B. Acr/o
• C. Skeletal System
• D. Papilloma

Answer: (B)

Acr/o is the combining form that signals something to do with the far end of a limb—the extremities. It shows up in terms like acrocyanosis (bluish color of the hands and feet) and acromegaly (enlargement of the extremities such as hands, feet, and face). That connection to the ends or tips of the body is what makes it the correct extremity prefix. Ankyl/o means fused or stiff, not related to the end parts of the body. The skeletal system option isn’t a prefix at all. Papill/o relates to a nipple or papilla, and it leads to terms like papilloma, not extremities.

Acr/o is the combining form that signals something to do with the far end of a limb—the extremities. It shows up in terms like acrocyanosis (bluish color of the hands and feet) and acromegaly (enlargement of the extremities such as hands, feet, and face). That connection to the ends or tips of the body is what makes it the correct extremity prefix.

Ankyl/o means fused or stiff, not related to the end parts of the body. The skeletal system option isn’t a prefix at all. Papill/o relates to a nipple or papilla, and it leads to terms like papilloma, not extremities.