MUSCULAR SYSTEM DISEASE AND DISORDER 1.05 Understand the functions and disorders of the muscular system 1
Bell Work Day 2: Muscle Math!!! Round answers to nearest whole number. 1. What percentage of muscle weight would you have if 60 pounds out of 140 pounds is muscle weight? 2. If you know out of 140 lbs., 60 lbs. is muscle weight, what is the muscle weight of a 200 lb. male? 3. What would the muscle weight be on an 80 lb. female? 4. If muscle weight is 90 lbs., how much does the person weigh? 5. If muscle weight is 45 lbs., how much does the person weigh? 1.05 Understand the functions and disorders of the muscular system 2
Alternate Muscle Math!!! What is the muscle weight of a person who weighs 140 lbs.? What is the muscle weight of someone who is 230 lbs.? If a person s muscle weight is 55 lbs., how much is his/her total body weight? If a person s muscle weight is 25 lbs., how much is his/her total body weight? 1.05 Understand the functions and disorders of the muscular system 3
Standards 14) Classify the three categories of muscle fibers, differentiating between cells and tissue. Draw evidence from informational texts to explain the locations, behavioral properties, and functional roles unique to each category. Draw on knowledge of biological processes, such as the body s conversion of ATP into energy, to illustrate phenomena such as muscle fatigue. 1.05 Understand the functions and disorders of the muscular system 4
Objectives Explore various diseases and disorders associated with the muscular system s failure to develop or function properly through a group research project. 1.05 Understand the functions and disorders of the muscular system 5
Fibromyalgia Fibromyalgia is a disorder characterized by widespread musculoskeletal pain accompanied by fatigue, sleep, and depression. In general, treatments for fibromyalgia include both medication and self-care. The emphasis is on minimizing symptoms and improving general health. No one treatment works for all symptoms. Most common in women 1.05 Understand the functions and disorders of the muscular system 6
Hernia Occurs when an organ protrudes through a weak muscle. Common sites for hernias 7
Some causes of hernias Constipation Pregnancy Excess stress on muscles/ peritoneum 8
Incarcerated hernia (strangulated) If you aren't able to push the hernia in, the loop of intestine can be trapped (incarcerated) in the abdominal wall. An incarcerated hernia can lead to a strangulated hernia, which cuts off the blood supply to your intestine. Surgery is needed to repair the hernia and restore blood supply to the bowel. A strangulated hernia can be lifethreatening if it isn't treated. Signs and symptoms of strangulated hernia include: Nausea, vomiting or both Fever Rapid heart rate Sudden pain that quickly intensifies A hernia bulge that turns red, purple or dark 1.05 Understand the functions and disorders of the muscular system 9
1.05 Understand the functions and disorders of the muscular system 10
Muscle Spasms or Cramps (Involuntary hypertonicity) Sustained contraction of the muscle. Long periods of exercise or physical labor, particularly in hot weather, may lead to muscle cramps (overuse). Can be caused by dehydration or poor circulation. Some medications and certain medical conditions also may cause muscle cramps. 1.05 Understand the functions and disorders of the muscular system 11
Muscular Dystrophy The muscular dystrophies (MD) are a group of more than 30 genetic diseases characterized by progressive weakness and degeneration of the skeletal muscles that control movement. Muscle cells deteriorate. 1.05 Understand the functions and disorders of the muscular system 12
Muscular Dystrophy There is NO cure. Only the symptoms are treated. Lifespan is shortened. 1.05 Understand the functions and disorders of the muscular system 13
Myasthenia Gravis (autoimmune disorder) Myasthenia gravis (my-us-thee-nee-uh GRAY-vis) is characterized by weakness and rapid fatigue of any of the muscles under your voluntary control. Myasthenia gravis is caused by a breakdown in the normal communication between nerves and muscles. There is no cure for myasthenia gravis, but treatment can help relieve signs and symptoms. 1.05 Understand the functions and disorders of the muscular system 14
Occurs more often in women than in men 1.05 Understand the functions and disorders of the muscular system 15
Strain Muscle strain or muscle pull or even a muscle tear implies damage to a muscle or its attaching tendons. Rest the strained muscle and apply ice for the first few days after the injury. Antiinflammatory medicines also help reduce pain and swelling. As the pain decreases, you can use heat on the muscle. Stretching and light exercises to bring blood to the injured area can also be useful. In general, stretching and warm compresses are helpful before exercises. Cooling down and icing the area after exercise can help. Think T for tear 1.05 Understand the functions and disorders of the muscular system 16
Tetanus (lockjaw) Serious bacterial disease that affects your nervous system, leading to painful muscle contractions, particularly of your jaw and neck muscles. Tetanus can interfere with your ability to breathe and, ultimately, threaten your life. 1.05 Understand the functions and disorders of the muscular system 17
Tetanus Enters the body through a puncture wound Thanks to the tetanus vaccine, cases of tetanus are rare in the United States The disease can be prevented by receiving a vaccine called tetanus antitoxoid. There is NO CURE! 1.05 Understand the functions and disorders of the muscular system 18
Group Activity Work with a partner to answer the questions on your worksheet concerning Muscular Dystrophy. You will have to research on the website: www.mda.org Make sure to answer all the questions, including the case study questions. Use this information to create a PPT. Include pictures/graphics. 19
Individual Activity Continue working on your Crossword Puzzle from yesterday! 1.05 Understand the functions and disorders of the muscular system 20