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Wednesday, May 12, 2010

HUMAN MUSCULOSKELETAL SYSTEM - LESSON 195

In this post we would learn about MUSCULOSKELETAL SYSTEM, The musculoskeletal system is also called as locomotor system, which is helpful to provide form, support, stability, and movement to the body. This system includes bones, muscles, and joints. These are very important so that they have functions in the body. 

1. BONES:  Bones give support to the framework around which the body is constructed, protect, and support internal organs. They also assist the body in movement because they are attached with muscles. The hematopoietic tissue, which is also called red bone marrow that manufactures blood cells. But the other parts of bone are very useful to minerals necessary for growth, such as calcium and phosphorous. The skeletal portion of the system serves as the main storage system.  

2. MUSCLES: Muscles are attached to bones or to internal organs and blood vessels, and are responsible for motion or movement. These muscle cells contain contractile filaments, which change the size of the cell. These mucles are varied as skeletal, cardiac, or smooth muscles. The main function is to produce force and cause motion. These muscles can affect locomotion of the organism itself or movement of internal organs. The contraction of cardiac and smooth muscle occurs without conscious thought and is necessary for survival. Internal movement involves the contraction and relaxation of muscles that are a part of viscera, and external movement is accomplished by the contraction and relaxation of muscles which are attached to the bones.

3. JOINTS:  Joints are the places where bones come together. Joints are mainly classified as structurally and functionally. So many types of joints are found within the body. They are build to allow movement and provide mechanical support. For greater or lesser flexibility of movement, the type of joint found in any specific location is determined.

Orthopedists are the doctors who treat bones and bone diseases. Orthopedics was a branch of medicine, which deals with correcting deformities in children. Where in which ortho means straight, and pedo means child. Doctors who treat joint diseases are known as Rheumatologists. Where in which Rheumato/ means watery flow and relates to joint diseases because several forms of arthritis are marked by collection of fluid in the joint spaces.

In the next post we would learn about the formation and structure of bones.

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