Which term is the tailbone?

Which term is the tailbone?

• A. Coccyx
• B. Clavicle
• C. Calcaneus
• D. Coloboma

Answer: (A)

The tailbone is the coccyx, a small bone at the base of the spine formed by fused coccygeal vertebrae. It sits below the sacrum and serves as an attachment point for pelvic ligaments and some muscles, helping with balance and support when seated. The clavicle is the collarbone, the calcaneus is the heel bone, and coloboma is an eye defect—none of these describe the tail end of the spine.

The tailbone is the coccyx, a small bone at the base of the spine formed by fused coccygeal vertebrae. It sits below the sacrum and serves as an attachment point for pelvic ligaments and some muscles, helping with balance and support when seated. The clavicle is the collarbone, the calcaneus is the heel bone, and coloboma is an eye defect—none of these describe the tail end of the spine.