Haversian systems or osteons
A)lack concentric lamellae.
B)do not contain osteocytes.
C)are found in spongy bone tissue.
D)are avascular.
E)are the basic units in compact bone tissue.

Question

Quizplus · Accepted Answer

Haversian systems or osteons are the basic units in compact bone tissue, which consist of concentric layers of bone matrix called lamellae. Each lamella encircles a central canal called the Haversian canal, which contains blood vessels, nerves, and lymphatic vessels. The concentric lamellae within an osteon are connected by small channels called canaliculi. Osteocytes, the mature bone cells, are located within small spaces called lacunae between the lamellae.

Haversian Systems or Osteons