Muscular system

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Muscular system

  1. 1. MUSCULAR SYSTEM Prepared by: MARICARR D. ALEGRE
  2. 2. • Composed of muscle cells and tissues held tightly together in bundles• There are more that 600 muscles in our body and make up more than half of our body weight• Movement is brought about by the contraction and relaxation of muscles
  3. 3. PROPERTIES OF MUSCLES Contractility - able to become shorter and thicker
  4. 4. PROPERTIES OF MUSCLES• Extensibility and elasticity – Ability of muscles to be stretched and to return to their original form
  5. 5. PROPERTIES OF MUSCLES• Irritability – Contraction of muscle stimulated by several stimuli like heat, light, chemical pressure and electricity
  6. 6. KINDS OF MUSCLE (BASED ON ACTION)• Voluntary Muscles - they can be move at will
  7. 7. KINDS OF MUSCLE (BASED ON ACTION)• Involuntary muscle - cannot be moved intentionally
  8. 8. TYPES OF VOLUNTARY MUSCLES• Skeletal muscles - attached to the skeleton - they are made to contract and move the skeleton whenever the person wants
  9. 9. TYPES OF VOLUNTARY MUSCLES• Striated muscles - appear to have stripes or striations - a combination or light and dark muscle
  10. 10. TYPES OF INVOLUNTARY MUSCLES• Smooth muscle - found on the muscles of the intestines, brain and other organs - without striations
  11. 11. TYPES OF INVOLUNTARY MUSCLES• Cardiac muscle - muscle of the heart - striated but involuntary
  12. 12. TENDONS• A tissue that is responsible for attaching the muscle to the bones

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