Human Physiology: Balance and Posture
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Questions and Answers

What is the definition of balance in the context of posture and movement?

  • The ability to maintain the line of gravity within the base of support with minimal postural sway (correct)
  • The ability to maintain a stable posture with minimal muscle activation
  • The ability to generate maximum force in a specific direction
  • The ability to change direction quickly and efficiently

    • What is the result of equilibrium in a system?

  • Decreased stability
  • Increased muscle activation
  • Increased postural sway
  • All acting forces are cancelled by each other resulting in a stable balanced system (correct)

    • What is the effect of a wider base of support on balance?

  • Decreased balance
  • Increased balance (correct)
  • Unstable balance
  • No effect on balance

    • What is the role of the ankle, knee, and hip in standing postural control?

    <p>Continuous muscle activation with an stabilizer role</p> Signup and view all the answers

    What is the function of the somatosensory system in postural control?

    <p>Integration of sensory information</p> Signup and view all the answers

    What is the description of postural sway?

    <p>Unconscious, small movements</p> Signup and view all the answers

    What is the primary factor that affects the line of gravity in standing posture?

    <p>Width of the base of support</p> Signup and view all the answers

    Which of the following is an internal force in standing posture?

    <p>Muscle activity</p> Signup and view all the answers

    What is the primary function of the somatosensory system in postural control?

    <p>Sensory integration</p> Signup and view all the answers

    Which joint has an 'isometric' activation in standing postural control?

    <p>Ankle, knee, and hip</p> Signup and view all the answers

    What is the result of postural sway in standing?

    <p>Maintenance of balance</p> Signup and view all the answers

    What is the purpose of the central nervous system in postural control?

    <p>Processing and integration of sensory information</p> Signup and view all the answers

    What is the role of ligaments in standing postural control?

    <p>Resisting extension gravitational moment</p> Signup and view all the answers

    What is the effect of a lower center of gravity on balance?

    <p>Increased balance</p> Signup and view all the answers

    What is the role of the proprioceptive system in postural control?

    <p>Proprioception</p> Signup and view all the answers

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