40 Questions
Which system is the least important for balance?
Vestibular system
What is the center of gravity (COG) in humans?
In the lower abdomen
What happens if the COG falls beyond the limit of stability (LOS)?
You will fall
Which systems give feedback to the brain to determine the best body position for balance?
Visual system and somatosensation
What do the principal components of the posture stabilization system detect?
Environmental interaction
Which systems are mainly responsible for detecting environmental interaction?
Visual system
What determines the movement of ankle, thigh, and trunk muscles?
Cortex and cerebellum
What is computerized dynamic posturography used for?
Testing the 3 systems for balance
Which system is most important for balance?
Visual system
What is the purpose of the powerful homeostatic mechanism mentioned in the text?
To prevent COG from moving out of the LOS
Which of the following is NOT a way to control the subject's visual system?
Detect the pressure on the surface
What does a pressure of 0 indicate in the context of maintaining balance?
The subject has fallen
Which conditions are most successful in maintaining balance according to the results?
Conditions 1, 2, 3, and 4
What happens when there is bilateral damage to the vestibular system?
Balance is maintained as long as vision or somatosensory system from feet is preserved
Which graph shows a maintained posture with only the vestibular system intact?
Graph 1
What triggers muscle activity very fast in maintaining balance?
The ankle strategy
When is the ankle strategy used in maintaining balance?
When there is enough surface for support
When is the hip strategy used in maintaining balance?
When there is not enough surface for support
Which of the following is NOT a characteristic of the ankle strategy?
Involves moving the hips
Which strategy is used when there is not enough surface for support in maintaining balance?
The hip strategy
Which strategy is used when there is enough surface for support in maintaining balance?
Ankle strategy
What does a pressure of 0 indicate in the context of maintaining balance?
The subject is falling
When is the hip strategy used in maintaining balance?
When there is not enough surface for support
Which systems are mainly responsible for detecting environmental interaction?
Vestibular and somatosensory systems
What triggers muscle activity very fast in maintaining balance?
The ankle strategy
When is the ankle strategy used in maintaining balance?
When there is enough surface for support
What happens if the center of gravity (COG) falls beyond the limit of stability (LOS)?
The subject falls
Which system is the least important for balance?
Vestibular system
Which conditions are most successful in maintaining balance according to the results?
Conditions 1, 2, 3, and 4
Which system is most important for balance?
Somatosensory system
Which of the following is true about the center of gravity (COG) in humans?
It is located in the lower abdomen.
What happens if the center of gravity (COG) falls beyond the limit of stability (LOS)?
You will fall.
Which of the following systems is the least important for balance?
Vestibular system
What do the principal components of the posture stabilization system detect?
Environmental interaction
Which systems give feedback to the brain to determine the best body position for balance?
Visual system, vestibular system, and somatosensation
When is the ankle strategy used in maintaining balance?
When there is not enough surface for support
What is computerized dynamic posturography used for?
To test the three systems responsible for balance
Which of the following is NOT a characteristic of the ankle strategy?
It is used when there is bilateral damage to the vestibular system.
What is the purpose of the powerful homeostatic mechanism mentioned in the text?
To prevent the COG from moving out of the LOS
Which of the following is NOT a way to control the subject's visual system?
Adjusting the subject's body posture
Test your knowledge on the control of posture and balance in Lecture 8. Explore concepts such as the center of gravity, limit of stability, and how the body maintains an upright position.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
