What is a Haversian system (osteon)? What are trabeculae and where are they found?

Question

What is a Haversian system (osteon)? What are trabeculae and where are they found?

Answer 1

These are both found in bones.  The Haversian system is the functional unit of dense bones.  It consists of a Haversian canal through which veins and nerves pass surrounded by rings of bone tissue deposited by osteoblasts.  Trabeculae are the sort of scaffold like rods of bone tissue that make up "spongy bone" which can be found at the ends of long bones and the interior of plate bones and long bones.  Trabeculae can also be found in other organs made of other tissues.