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Skeletory system
This is how our skeleton looks like. It is made of 206 bones.
Some skeletory disorders are: Osteoporosis- Has to do with density of the bone, common in elderly people because their bones become more susceptible to fractures. Rickets- Commonly found in third world countries, and occur in children that are malnurished. It's a Vitamin D defiency, and is due to lack of calcium. Leukemia- Disease of the blood in the bone or the Bone Marrow. Pagets- Mostly seen in humans after osteoarthritis at the age of 50. This disorder makes your bones very dense and can cause it to be enlarged and deformed.
About our Skeletal System: Each part of our Skeletal system plays a majorly important role in our bodies. The Skull, or Cranium, protects our brain. It provides the framework for most sensory organs, including our eyes, ears, tongue, nose and some skin. The backbone , or spinal cord, is really flexible and made of 26 bones. It provides structure from which all other upper body structures branch, and it protects the spinal nerve, which sends all the information to your brain that sends to your body. The five major roles that our bone structure serves are: 1. Support 2. Protection 3. Movement 4. Storage 5. Blood cell formation There are three different compositions of the bone. Periosteum- The periosteum is exceedingly important since it's lower layer houses bone forming cells called osteoblast. the double layer serves as a place where tendons and ligaments can insert and anchor into the bone. Compact Bone- Canals called canaliculi, which are filled with blood vessels, channel through the bone and all join to many major canals called Haversian canals. These canals make the bone hollow. The compact bone is also rich with nerves. Spongy Bone- Towards the center of the bone, the bone gets hollow, so it is not exactly spongy. Located within the spongy bone is red bone marrow and yellow bone marrow. The red bone marrow produces red blood cells, and the yellow bone marrow is stored fat.
