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Immune and Skeletal Systems
Transcript of Immune and Skeletal Systems
-compact bone different kinds of joints:
-ball & socket joint
-ellipsodial joint bones have the biggest source of calcium, so that's why they're so strong skeleton protects and supports internal organs and other materials within the body produce red blood cells skeleton is about 20% of your weight when you are lying down, your spine stretches out and gets longer, so you become taller when you're sleeping the vertebral column surrounds
the spinal cord and ribs,
and protects the heart and
helps you breathe skeleton pumps the heart, oxygenates blood, regulates hormone production, and interprates sensory data bones also form most of the blood cells in the blood...which takes place in the bone marrow the skull is made up of 22 bones that help protect the face and brain from any harmful damage has 5 major functions:
-provides shape and support
-protects your organs
-produces red blood cells
-enables you to move
-stores minerals and other
materials until your body needs them helps maintian a steady amount of calcium 2 main structures:
-bone hyaline cartilage provides support with flexitbility and resistance, most abundant axial skeleton is formed by the bones of the head and trunk and the appendicular skeleton is formed by the bones of the upper and lower limbs and the shoulder and hip bones Health Topic:
Osteoporosis osteoporosis is a term that means "pourus bones" a skeletal disease that effects women and men condition in which bones have lost minerals-especially calcium-making them weaker, more brittle, susceptible to fractures any bone in the body can be affected by osteoporosis, but the most common places where fractures occurs disease makes bones thinner and weaker, fractures can occur during any normal actions not getting enough vitamin D and calcium, even during childhood and teen years, can contribute to osteoporosis about 10 million Americans have osteoporosis, and approximately another 13-17 million people have low bone mass, a condition that increases the risk of developing osteoporosis
majority of those with osteoporosis are women but men also get it lack of exercising; cigarette smoking; or excessive consumption of alcohol can contribute to osteoporosis condition that can result in tremendous pain with fractures regular exercise throughout life can help avoid osteoporosis, also eating lots of calcium you need these minerals in your daily diet to help prevent from getting osteoporosis this is what the effect of osteoporosis in your bones looks like: T cells identifies the antigen with its spikes if bad, it creates B cells which create antibodies antibodies lock on to the antigen as if it was a puzzle only one specific type of antibody would lock on to the antigen if you never had the virus and the B cell does not know which kind of antibody to create, it keeps on trying if it takes too long to find the antibody, you die vaccines have a dead or weakened virus (flu virus example) so the immune system can find what antibody to use against this specific kind of virus. example of how antibodies and antigens work: if the antigen is square, the antibody needs to have a square shaped "mouth" to lock on it. if the antigen is circular then the anti body need to have a circular "mouth" to lock on it. Cancer Cancer is not a virus cancer is a mutation that cells have when they divide once it happens the cells divide really fast without control T cells may identify it is a bad cell and try to destroy it, but if it gets to destroy one cell,
there would be a lot more created already. sometimes the T cells identifies the cancer cell but it does not attack The END ! Nicola Karasik
March 25, 2010
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April 26, 2010