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Types of Muscle Contractions - PowerPoint PPT Presentation


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Types of Muscle Contractions. Chapter 7. Tonic Contraction. Continuous, low-strength muscle contraction Posture. Twitch Contraction. quick, jerky response to a stimulus. Tetanic Contraction. a sustained contraction or “tetanus” many twitches put together. Concentric Contraction .

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tonic contraction
Tonic Contraction
  • Continuous, low-strength muscle contraction
  • Posture
twitch contraction
Twitch Contraction
  • quick, jerky response to a stimulus
tetanic contraction
Tetanic Contraction
  • a sustained contraction or “tetanus”
  • many twitches put together
concentric contraction
Concentric Contraction
  • Type of isotonic contraction
    • Movement at a joint
  • Shortening of a muscle
    • Insertion end moves toward the position of origin
eccentric contraction
Eccentric Contraction
  • Type of isotonic contraction
  • Lengthening of a muscle
    • Insertion moves away from the origin
isometric contraction
Isometric Contraction
  • Increased tension with no movement
    • The muscle tension increases but the muscle does not shorten