The Human Skeleton
The Human Skeleton
The Human Skeleton
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Report by: Napoleon Hernandez Brian Jim Mallari Janna Olorvida Rob Robbie Rabuel
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The Skeletal System is the frame work of the body and provides support and protection. The human skeletal system is made up of 206 bones which rely on bone marrow, tendons and ligaments to function. Bones are made up of two types of tissue: Compact or dense Tissue and spongy tissue There are 4 types of bones: Long bones (like those in the arms and legs) Short bones (like those found in the ankles and wrists) Flat bones (like ribs and those in the skull) Irregular bones (like the vertebrae in the spine)
2. PROTECTION OF DELICATE ORGANS: In areas like the rib cage and skull, the skeleton protects inner soft but vital organs like heart and brain from external shocks. Any damage to these organs can prove fatal, therefore protective function of skeleton is very important. 3. LEVERAGE FOR MOVEMENTS: Bones of the human skeleton in all parts of body provide attachment to the muscles. These muscles provide motor power for producing movements of body parts. In these movements the parts of skeleton acts like levers of different types thus producing movements according to the needs of the human body.
Types of Bones All of the bones of the body can be broken down into five types: long, short, flat, irregular, and sesamoid.
Long bones are longer than they are wide and are the major bones of the limbs. Long bones grow more than the other classes of bone throughout childhood and so are responsible for the bulk of our height as adults. A hollow medullary cavity is found in the center of long bones and serves as a storage area for bone marrow. Examples of long bones include the femur, tibia, fibula, metatarsals, and phalanges.
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