Muscular and Skeletal Systems: Interactions

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Muscular and Skeletal Systems: Interactions

  1. 1. Interactions:Bones andMuscles
  2. 2. Objectives How do the skeletal and muscular systems work together to create movement? How are the functions of the parts of the skeletal and muscular systems supported by their structure?
  3. 3. JointsA joint is simply where 2 or more bones meet in your body One example of a joint is your elbow  your humerus, radius and ulna make up your elbow joint
  4. 4. Joints Pick3 joints in your body Determine which bones come together to form each joint
  5. 5. Joints Several tissues work together to build the joints in your body  Bone: provide an attachment point for muscles  Muscle: contract to pull bone  Tendons: attach muscle to bone  Ligaments: attach bones  Fluid sac: cushions the joint
  6. 6. Build a Joint selecthere to see how a joint is organized in your body
  7. 7. Interactions The tissues of your muscular system and your skeletal system interact to cause movements in your body. Let’s take a look at the steps that need to occur for this to happen.
  8. 8. Making MovementPulling your lower armup biceps1. Bicep muscles contract2. Contracting biceps pulls on a tendon attached to your lower arm bones3. The tendon pulls your lower arm bones up
  9. 9. Making MovementPulling your lower armdown1. Tricep muscles contract2. Contracting triceps triceps pull on a tendon attached to your lower arm bones3. The tendon pulls your lower arm bones down

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