Which root word refers to a curved spine?

The correct answer refers to "scoli/o," which is a root word that denotes a curvature of the spine, often associated with a condition known as scoliosis. Scoliosis is characterized by an abnormal lateral curvature of the vertebral column, which can lead to an uneven posture and potentially other physical issues if not addressed.

The other root words provided have different meanings: "kyph/o" relates to a forward curvature of the spine, often seen in conditions where there is an exaggerated rounding of the upper back (kyphosis). "My/o" refers to muscle tissue, and "fibr/o" pertains to fibrous connective tissue. Understanding these distinctions is crucial for recognizing different medical conditions associated with these root words and their implications in the field of medicine.