The Skeletal SystemPRESENTATION BY:

DEGTYAREV ROBERT

VORONINA ANNA

What is a Bone?The skeletal system is made up of the bones and cartilage that forms the framework of your body.

We have bones so that we are not a puddle of skin and guts on the floor.

Babies have 300 bones.

Adults have 206 bones

The Inside of a BoneA bone Is made up of salts, water, and tissue.

Inside a bone there is a jelly substance called bone marrow.

Bone marrow produces blood cells for the body.

Four Main jobs of a Bone:1. To protect your body and give it shape

2. To protect your internal organs.

3. To provide a scaffolding for you muscles, allowing you to move.

4. To store minerals and make blood cells.

SkullIt is a bony structure, the head in the skeleton, which supports the structures of the face and forms a cavity for the brain.

The adult skull consists of two parts, of different embryological origin – the neurocranium and the viscerocranium.

Except for the mandible, all of the bones of the skull are joined together by sutures, synarthrodial (immovable) joints.

The SpineThe spine is the central support for the body

The spine is made up of separate bones called vertebrae.

Between each vertebrae is cartilage which keeps bones from rubbing against each other.

RibsRib cage is made up of 12 vertebrae, 24 ribs and a breastbone in three parts. It protects you heart and lungs from physical impact.

Hands and FeetThe bones in your hands and feet are VERY flexible.

The foot has 26 bones. (tarsals, metatarsels, and phalanges)

The hand has 27 bones. (metacarpals, carpals, and phalanges)

Hips and LegsThe hip bone helps us to stand upright and move.

The major (long) bones of the human leg are the femur (thighbone), tibia (shinbone), and fibula (the smaller, rear calf bone). The patella (kneecap) is the bone in front of the knee.

ArmsThe bones in the arm are very flexible.

The three bones that make up the arm are the ulna, radius, and humerus.

The two bones that form the shoulder are the clavicle and the scapula.

Joints

The Pivot Joint Hinge Joint

The Gliding Joint Ball-and-socket Joint

A joint or articulation (or articular surface) is the location at which bones connect.They are constructed to allow movement (except for skull, sacral, sternal, and pelvic bones) and provide mechanical support.

Referenceshttp://library.thinkquest.org/5777/ske1.htm

http://www.mnsu.edu/emuseum/biology/humananatomy/skeletal/skeletalsystem.html

http://www.dhmc.org/dhmc-internet-upload/file_collection/ms.web.ms5347.xray.jpg

www.unitedstreaming.com

http://services.epnet.com/getimage.aspx?imageiid=4695