The bone commonly referred to as the pelvis is called which term?

The bone commonly referred to as the pelvis is called which term?

• A. Pelvis
• B. Coccyx
• C. Hip Bone
• D. Ischium

Answer: (C)

The key idea is that the pelvis is a basin-like structure formed by two hip bones plus the sacrum and coccyx, not a single bone. The bone people most often mean when they say “the pelvis” is the hip bone (also called the os coxae). Each hip bone is a fusion of three parts—ilium, ischium, and pubis—to create one sturdy bone that becomes part of the pelvic girdle. The coccyx is a separate, small tailbone at the base of the spine, and the ischium is just one component of the hip bone. Since the question asks for the bone commonly referred to as the pelvis, the hip bone is the best answer.

The key idea is that the pelvis is a basin-like structure formed by two hip bones plus the sacrum and coccyx, not a single bone. The bone people most often mean when they say “the pelvis” is the hip bone (also called the os coxae). Each hip bone is a fusion of three parts—ilium, ischium, and pubis—to create one sturdy bone that becomes part of the pelvic girdle. The coccyx is a separate, small tailbone at the base of the spine, and the ischium is just one component of the hip bone. Since the question asks for the bone commonly referred to as the pelvis, the hip bone is the best answer.