They number 90 bones, act as supports, or levers,and are known by having a medullary canal in the centre of each, a shaft{diaphysis), and two extremities. They are developed by osseous deposit in cartilage.
They number 90 bones, act as supports, or levers,and are known by having a medullary canal in the centre of each, a shaft{diaphysis), and two extremities. They are developed by osseous deposit in cartilage.