The+muscular+system

The Muscular System
The muscular system involves over 600 muscles that contract and relax to move our body and keep us alive. Your cardiac muscle is one of the three different kinds of muscles in our body. The cardiac muscle pumps blood through your heart and body. Smooth muscles are the muscles that help digest your food and let you breathe through your lungs to keep us alive. Skeletal muscles are the muscles that make us move. They help us sit up straight and to do a simple pull-up. They are connected to the bones by tendons and are the only muscles we control with our brain. It would be impossible to survive without all our muscles. One of the most serious diseases in the muscular system is Muscular Dystrophy. There are many different types of this severe disease, but they all cause individual deaths of muscle fibers. You can only get this disease if your opposite gender parent has it, or you can become a carrier, so your children can get it. The biggest symptom is progressive muscle weakness everywhere in the body. This disease is more serious for men. They appear normal at birth, but do have poor head control. By age 3, the weakness is clear. The boy are able to walk until about 12 years of age. The death of these young men usually occur at a young age, before adulthood. It is still very serious for females and always causes death earlier in life. Fortunately, Muscular Dystrophy is very rare, but many new treatments are important to manage this problem. All treatments are very intense because they depend on our survival. Cretin diseases need physical therapy and nutritional diets. Scientists will never give up on this disease. They are and always will be searching for a cure