Option B

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Option B

• Muscles and Fitness

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Movement in Humans

• Muscles provide the force needed locomotion
• Tendons attach muscle to bone
• Bones provide an anchor for muscles, act as
  levers changing the size or direction of forces
  generated by muscles
• Ligaments connect bone to bone, restricting
  movement at the joint
• Nerves stimulate and coordinate muscle movement

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Sliding Filament Theory of Muscle
Contraction

• Relaxed vs. Contracted Sarcomere

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• Synaptic Transmission

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Physiology of Muscle Contraction

• http//highered.mcgraw-hill.com
• Animation Action Potentials and Muscle
  Contraction

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• (Knee) Joint junction between bones
• Cartilage reduces friction
• Synovial Fluid lubrication
• Joint Capsule seals the joint, holds in the
  synovial fluid
• Ligaments

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Joint Injuries

• Sprains Grade I, II, III

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• Grade I sprain pain with minimal damage to the
  ligaments.
• Grade II sprain massive ligament damage and
  mild looseness of the joint.
• Grade III sprain the ligament is completely torn
  and the joint is very loose or unstable.

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Torn Muscle
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Joint Dislocation bones moved out of alignment
often accompanied by ligament damage
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Intervertebral Disc Damage bulging disc presses
on nerves causing radiating pain