Final answer:
The coxal bone, or hip bone, forms the pelvic girdle and consists of the ilium, ischium, and pubis. It attaches the lower limb to the axial skeleton and is important for body movement and stability.
Step-by-step explanation:
The coxal bone, also known as the hip bone, is a single bone that forms the pelvic girdle. It is made up of three regions: the ilium, ischium, and pubis. Together with the sacrum and coccyx, the hip bones form the pelvis.