Osteomyelitis often develops after an injury or trauma. In osteoporosis pronounced: ahs-tee-o-puh-ROW-sus , bone tissue becomes brittle, thin, and spongy. Bones break easily, and the spine sometimes begins to crumble and collapse.
Although the condition usually affects older people, girls with female athlete triad syndrome and teens with eating disorders can get the condition. Repetitive stress injuries RSIs. RSIs are a group of injuries that happen when too much stress is placed on a part of the body, resulting in inflammation pain and swelling , muscle strain, or tissue damage. This stress generally is from repeating the same movements over and over again.
Playing sports like tennis that involve repetitive motions can also lead to RSIs. Kids and teens who spend a lot of time playing musical instruments or video games are also at risk for RSIs. RSIs are becoming more common in kids and teens because they spend more time than ever using computers.
But three to five people out of 1, have a condition called scoliosis pronounced: sko-lee-OH-sus , which causes the spine to curve too much. The condition can be hereditary, so a person who has scoliosis often has family members who have it. Strains and sprains. Strains happen when a muscle or tendon is overstretched.
Sprains are an overstretching or a partial tear of the ligaments. Sprains, on the other hand, are usually the result of an injury, such as twisting an ankle or knee. Tendonitis pronounced: ten-duh-NY-tus is a common sports injury that usually happens after overusing a muscle.
The tendon and tendon sheath become inflamed, which can be painful. Resting the muscles and taking anti-inflammatory medication can help to relieve this condition. Note: All information on KidsHealth is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor. All rights reserved. Find a Doctor. About Us. Community Programs. California Kids Care. International Services. Video Visits: Telemedicine. Locations Main Campus. Satellite Locations.
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Summary Read the full fact sheet. On this page. Different types of muscle Make-up of muscle The neuromuscular system Shapes of skeletal muscle Muscle disorders Where to get help Things to remember.
There are about muscles in the human body. Muscles have a range of functions from pumping blood and supporting movement to lifting heavy weights or giving birth.
Muscles work by either contracting or relaxing to cause movement. This movement may be voluntary meaning the movement is made consciously or done without our conscious awareness involuntary. Glucose from carbohydrates in our diet fuels our muscles. To work properly, muscle tissue also needs particular minerals, electrolytes and other dietary substances such as calcium, magnesium, potassium and sodium. A range of problems can affect muscles — these are collectively known as myopathy.
Muscle disorders may cause weakness, pain or even paralysis. Different types of muscle The three main types of muscle include: Skeletal muscle — the specialised tissue that is attached to bones and allows movement. Together, skeletal muscles and bones are called the musculoskeletal system also known as the locomotor system.
Generally speaking, skeletal muscle is grouped into opposing pairs such as the biceps and triceps on the front and back of the upper arm. Skeletal muscles are under our conscious control, which is why they are also known as voluntary muscles. Another term is striated muscles, since the tissue looks striped when viewed under a microscope.
Tid Bits of Info. Muscles do nothing on their own, they are "run" by the nervous system. The nervous system can transmit signals at speeds of meters feet per second.
There are around skeletal muscles in the human body. Muscle makes up around half of the total human body weight. Physical Therapists can help rehabilitate the neuromuscular activity in the human body. Thank Reply Share. The rules of replying: Be respectful. This is a space for friendly local discussions. No racist, discriminatory, vulgar or threatening language will be tolerated.
Be transparent. Use your real name, and back up your claims. Keep it local and relevant. This is particularly evident in the knee and shoulder joints, where muscle tendons are a major factor in stabilizing the joint. Heat production, to maintain body temperature, is an important by-product of muscle metabolism. Nearly 85 percent of the heat produced in the body is the result of muscle contraction.
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