Answer
Periosteal arteries enter the diaphysis of the bone through channels called Volkmann's canals, which course at right angles to the long axis of long bones. . First, the periosteal blood vessels supply the periosteum and the outer layers of the compact bone. Then so-called nutrient arteries enter the medullary cavity through foramina or holes in the compact bone.
Work Step by Step
In the medullary cavity each nutrient artery splits into proximal and distal branches that travel to each end of long bones.
