Skin Tags Bladder Breast Osteopathies Mitral regurgitation Heart failure Rosacea Cirrhosis Paget's disease of bone Autoimmune hepatitis Familial hypercholesterolemia Hemophilia

CRC - Bone Cancer

Source: www.cancer.org
Topic: Bone
Download: Click here!

Sort Desciption: Bone Cancer. What Is Cancer? Cancer is a group of many related diseases. ... Bone is the supporting framework of the body. Most bones are hollow. ...

Content Inside:
Bone is the supporting framework of the body. Most bones are hollow. The outer part of bones consists of fibrous tissue called matrix onto which calcium salts are deposited. At each end of the bone is a zone of cartilage, a softer form of bone-like tissue. Cartilage consists of a fibrous tissue matrix mixed with a gel-like substance. Unlike bone, cartilage does not contain calcium. Cartilage acts as a cushion between bones and, together with ligaments and some other tissues, forms the joints between bones. The bone itself is very hard and strong. Some bone is able to support as much as 12,000 pounds per square inch. It takes as much as 1200 to 1800 pounds of pressure to break a femur (thigh bone).

The outside of the bone is covered with a layer of fibrous tissue called periosteum. The bone itself contains two kinds of cells. The osteoblast is the cell responsible for forming bone and the osteoclast is the cell responsible for dissolving bone. Although bone looks to be a very unchanging organ, the truth is that it is very active. New bone is constantly forming, and old bone dissolving.

Bone marrow is the soft tissue inside the hollow bones. The marrow of some bones consists only of fatty tissue. The marrow of other bones is a mixture of fat cells and hematopoietic (blood- forming) cells. These blood-forming cells produce red blood cells, white blood cells, and blood platelets. There are some other cells in the marrow such as plasma cells, fibroblasts, and reticuloendothelial cells. ...

Name (required)

E-mail (required - never shown publicly)

URI (optional)

Your Comment

Verification Code

© 2007-2009 HealthPDF.org | Design by Ganesh Gunasegaran
Privacy Policy

All files and contents mentioned are the property of their respective owners. This page consists of a compilation of public information, commonly available on the internet, at multiple sites, as well as official websites. No information on this page is guaranteed to be correct, and any data contained here may be erroneous.