Periosteum

Original Editor - Lucinda hampton

Top Contributors - Lucinda hampton, Oyemi Sillo and Vidya Acharya  

Introduction

The periosteum is an intricate structure composed of an outer fibrous layer that gives structural integrity and an inner cambium layer that possesses osteogenic potential. During growth and development it aides in bone elongation and modeling, and when a bone is fractured, participates in its recovery. It is not present in sesamoid bones and the intra-articular ends of bones.

Sub Heading 2

The outer layer of the periosteum is mostly made of elastic fibrous material, such as collagen. It also contains blood vessels and nerves.

The blood vessels of the periosteum contribute to the blood supply of the body’s bones. They can pass into the dense and compact layer of bone tissue below, called the bone cortex.

Blood vessels enter the bone through channels called Volkmann canals that lie perpendicular to the bone. From there, the blood vessels enter another group of channels called Haversian canals, which run along the length of the bone.

The nerves of the periosteum register pain when the tissue is injured or damaged. Some of the nerves of the periosteum travel alongside the blood vessels into the bone, although many remain in the outer layer of the periosteum.

Resources

• bulleted list
• x

or

1. numbered list
2. x