The coxal bones, also known as the hip bones, are large, flat bones that form the sides of the pelvis. Each coxal bone is made up of three parts: the ilium, ischium, and pubis. These bones connect the spine to the lower limbs and provide support for the body during activities like walking and running. Coxal bones play a crucial role in protecting internal organs, such as the bladder and reproductive organs. They also serve as attachment points for various muscles, contributing to movement and stability. The structure of the coxal bones is essential for maintaining balance and posture.