Final answer:
The lumbar vertebrae are not part of the pelvis, which consists of the sacrum, coccyx, and hip bones. The correct answer is D) lumbar vertebrae. The sacrum and coccyx are part of the pelvis, with the sacrum being connected to the hip bones and the coccyx being an extension at the base of the vertebral column.
Step-by-step explanation:
The question is asking which of the listed items is not part of the pelvis. The pelvis consists of the sacrum, coccyx (formed by the fusion of four small coccygeal vertebrae), and the right and left hip bones (os coxae). The lumbar vertebrae are part of the vertebral column but not part of the pelvic girdle. Therefore, the correct answer to the question is D) lumbar vertebrae. To elaborate on the options, the sacrum is formed by the fusion of five sacral vertebrae. It connects to the hip bones to form the pelvis. The coccyx, or tailbone, is the small bone at the base of the spine, developed from fused coccygeal vertebrae. The os coxae, or hip bone, is an attachment point for the lower limbs and is firmly joined to the sacrum.