Endoskeleton in Vertebrates | Chordata | Zoology
In vertebrates the skeleton forms a framework of the body to which muscles are found attached. The skeleton is made of cartilage or bone or of both cartilage and bone. The presence of an endoskeleton is a characteristic of vertebrates, though many vertebrates also have a dermal exoskeleton. Dermal Bony Skeleton: The dermal exoskeleton consists of dermal scales and fin [...]