The horse's skeleton is the main framework of its body. It supports the body and protects the most delicate organs inside: the skull shields the brain, while the ribs guard the heart, lungs and organs. The bones are connected by moveable joints and worked by muscles. Fossil show how the horse's skeleton has adapted over 60 million years, from the earliest Eohippus (dawn horse), to the modern horse Equus caballus The bones of the skeleton There are two main parts to a horse's skeletons. The axial skeleton protects the horse's vital parts and consists of the skull, the ribcage and the backbone. The appendicular skeleton supports the body and consists of the shoulders and forelegs, pelvis and hind legs. Axial Skeleton The skull protects the brain. The backbone carries and protects the spinal cord. The ribcage protects the heart, lungs and other important internal organs. Appendicular skeleton This part of the horse's skeleton supports the rest of its body. The shoulders, pelvis, fore and hind legs are connected to the axial skeleton through a network of muscles and and ligaments |