Skeletal system

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Skeletal system
The skeletal system is made up of the hard structural tissues of the body - the bones and connective tissues that hold them together. The skeleton provides a framework for the muscles and tissues, allows movement by conveying force to the muscles (tendons), introduces flexibility into the rigid structure via joints (ligaments), stores and releases some minerals and cells when the body needs them, and protects the most vulnerable organs and tissues (spinal column, rib cage, and cranium). The human skeleton contains different types of bones classified by their shape and the type of marrow they contain: Red bone marrow is the site of red blood cell creation and yellow marrow is mostly fat cells. Some bones change their roles as an individual grows and ages, including ossification and connective tissue rearrangement to create an adult skeleton. Bones grow based on growth hormone and sex hormones, with growth spurts occurring around puberty. Early disruptions of this system can result in stunted growth, a permanent feature of the individual's skeleton. The skeletal system by Jeannette Payne The normal human skeleton has 206 bones. Each of them are classified according to their shape and size, and each having their own purpose. The skeletal system as a whole has several of its own res...More> Write Disorders of the human skeletal system by John Louie Ramos The skeletal system is biological system that serves as the framework of each living organism. The skeletal system has many functions including supporting, allowing and organizing body movements and p...More> Write
	Classification of human bones by Dr Pandula Siribaddana The adult human body consists of 206 bones and the infant body would have about 270. These structures are located in various parts of the body and are involved with different types of functions that play a vital part in the maintenance and every day... More> Common causes of bone pain by Jennifer Kirkman One of the most common reasons for having bone pain is arthritis. There are many types of arthritis, one of which is osteoarthritis. The joint cartilage has a loss that is progressive, and as it occurring, there is a lot of pain in the bones, sorene... More> Google Images
How to tell if a bone is broken by Dr Pandula Siribaddana Broken bones or fractures are seen among the general population at increased rates as a result of climbing number of road traffic accidents. A heavy influx of such patients can also be seen in natural...More> Write Structure and function of bone joints in humans by Tarek Musslimani Joints are connections between neighbouring bones in the body skeleton. There are three types of joints in humans. These are: fibrous joints and cartilaginous joints in addition to synovia...More> Write The anatomy of the skeletal system
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Quick Facts

A normal adult human skeleton has 206 bones.
Babies are born without a complete skull, the connective tissues that allow for flexibility during birth ossify (turn into bone) during the first years of life.
Bone is not as solid a structure as one might think - osteoclasts and osteoblasts (cells that build and degrade bone) are constantly rearranging the bone matrix to release and store calcium.
The red bone marrow found in the center of some bones of the skeletal system is where red blood cells are made.
Connective tissue disorders affect the skeletal system, weakening the joints and connections between the bones and the muscular system, limiting movement.
Not all joints in the skeletal system allow movement.

Official Websites

PennState Biology Department
The skeletal system
Minnesota State University
Divisions of the skeletal system and skeletal anatomy
Hillendale Health
Information to support and expand the curriculum around the skeletal system and bone facts.
Arthritis Foundation
Take control of your joint pain
Medline Plus
Bone diseases
Connective tissue disorder information
From the NIH via MedlinePlus
Bones of the human body
An interactive list from InnerBody.com

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The Human Body: Skeletal System

Examine the structure of the human body—through detailed animation and x-ray motion pictures—in terms of the skeletal system, the framework of bones whose composition and arrangement support our internal organs and govern the way we move. From head to toe, bones in each region of the body is examined in relation to its specific regions and to its contribution to the body as a whole.

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