LArge bone mode and osteon models

PERIOSTEUM

PROTECTS BONE / PROVIDES A ROUTE FOR BLOOD

VESSELS AND NERVES ASSOCIATED WITH BONE

Peristeal Blood Vessel

Brings blood to the interior of the bone and to the osteocytes

SHARPEY’S FIBERS / PERFORATING

FIBERS

Allows blood vessels and nerves to invade the bone

Osteocyte

Cell of the bone connective tissue, makes matrix

Blood Vessel

Brings blood to the interior of the bone and to the osteocytes

VOLKMAN'S CANALS

COMPLETE COMMUNICATION PATHWAY BETWEEN

BONE INTERIOR AND EXTERIOR SURFACE

Compact Bone

Protects body/ lever system for movement/ makes up bulk of long

bones

CIRCUMFERENTIAL LAMELLAE

Lamellae found on the outer portion of a long bone

CONCENTRIC LAMELLAE

Contain Osteocytes/ make up the layers of the osteon

Lacuna

Small chambers that hold the osteocytes

Interstitial Lamella

Remnants of concentric lamellae/ fill in spaces between concentric

lamellae of the osteons/ Part of Compact bone structure

CENTRAL/ HAVERSIAN CANAL

CARRIES BLOOD VESSELS/ NERVES/LYMPH THROUGH

THE BONY MATRIX

Osteon (Haversian System)

Functional unit of the bone- Central canal, and all concentric

Lamallae radiating outwardly

Canaliculus

Tiny canals that form a dense transportation network through the

hard matrix connecting cells of the osteon to a nutrient supply

(tiny canals through the hard matrix connecting osteon cells to nutrients)

SPONGY BONE/ TRABECULAE

HELP FORM THE SPIKY/OPEN-WORK APPEARANCE OF

SPONGY BONE

ENDOSTEUM

Fibrous membrane lining of medullary cavity & trabeculae of

spongy bone. Contains osteoblasts and osteoclasts, is site of

breakdown of bone to maintain proper thickness of compact bone