The central (Haversian) canal that runs through the core of each osteon is the site of . adipose tissue and nerve fibers cartilage and interstitial lamellae blood vessels yellow marrow and spicules

Blood vessels and nerve fibers

Explanation:

The Haversian canal serves as the bone tissues and it runs through the core of each osteon. The osteon surrounds the Haversian canal and contain structures called lamellae.

These lamella are made largely of collagen fibers and also various network of rich blood vessels and cells which produces blood cells in the body. Nerve cells which helps in the relay of impulses are also present. The rich contents of the bone gives it its strength and durability.