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Muscles

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Transcript

  • 1. Muscles
  • 2. Bones, joints and muscles make up the locomotor system. Muscles are flexible and elastic. Locomotor system
  • 3. Muscles -In our body, we have more than 600 bones. -Muscles work in pairs, when one muscle contracts, the other one relaxes. relaxed contracted
  • 4. Muscles They are attached to the bones by tendons
  • 5. gluteal muscles intercostals neck muscles
  • 6. Quiz • 1. What attaches the muscles to the bones, tendons or joints? • 2. Are muscles hard and rigid or flexible and elastic? • 3. This muscle is in the arm. Is it the biceps or the quadriceps? • 4. These muscles are in the trunk. They are between the ribs. Are they the intercostal or the pectoral muscles? • 5. Do muscles work on their own or in pairs? • 6. When one muscle in a pair contracts does the other muscle contract too or relax?
  • 7. Answers • 1.Tendons • 2. Flexible and elastic. • 3. The biceps. • 4. Intercostal muscles • 5. In pairs. • 6. The other one relaxes.