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 (A)</p> Signup and view all the answers

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

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

What is the description of postural sway?

<p>Unconscious, small movements (B)</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 (C)</p> Signup and view all the answers

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

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

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

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

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

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

What is the result of postural sway in standing?

<p>Maintenance of balance (D)</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 (A)</p> Signup and view all the answers

What is the role of ligaments in standing postural control?

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

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

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

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

<p>Proprioception (D)</p> Signup and view all the answers

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