The combining form cost/o denotes which structural area?

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Multiple Choice

The combining form cost/o denotes which structural area?

Explanation:
cost/o denotes the rib, a part of the thoracic skeleton. In medical terminology, combining forms name the body part involved, so cost/o is used in terms that relate to the ribs—for example, costal means pertaining to a rib, and costochondral refers to the rib and its cartilage junction (with cartilage being described by chondr/o, not cost/o). This is why the rib is the correct structural area represented by cost/o. Other combining forms, like oste/o for bone or chondr/o for cartilage, refer to different structures.

cost/o denotes the rib, a part of the thoracic skeleton. In medical terminology, combining forms name the body part involved, so cost/o is used in terms that relate to the ribs—for example, costal means pertaining to a rib, and costochondral refers to the rib and its cartilage junction (with cartilage being described by chondr/o, not cost/o). This is why the rib is the correct structural area represented by cost/o. Other combining forms, like oste/o for bone or chondr/o for cartilage, refer to different structures.

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