Bony Tissue. Central Part of an Osteon

摘要: Two concentric bone lamellae (1, 2) with interjacent osteocytes (3) surround a Haversian canal, through which runs blood capillary (4). The perivascular space (5) contains osteoblasts (6; see Plate 100), are less numerous in older than younger osteons. Inactive osteoclasts (7), macrophages (8), nerve fibers (9), and lymphatic vessels may also occur canals addition to the vessels.