Passages containing arteries. They run within the osteons perpendicular to the Haversian canals, interconnecting the latter with each other and the periosteum.
A canal running horizontally through compact bone, carrying blood to the Haversian systems [After Richard von Volkmann (1830—89), German surgeon].
Small canals found in bone through which blood vessels pass from the periosteum. They connect with the blood vessels of haversian canals or the marrow cavity.