75 Questions
Which of the following is true about the center of gravity (COG)?
COG cannot fall beyond the limit of stability (LOS)
Which of the following systems is the least important for balance?
Vestibular system
What happens if the COG falls beyond the limit of stability (LOS)?
You will fall
Which of the following senses is mainly involved in maintaining balance?
Somatosensation
What do the three systems (visual, vestibular, somatosensation) do in the posture stabilization system?
Determine the ideal body position
Which part of the brain is involved in selecting and adjusting muscle contractile patterns?
Cortex
Which muscles are involved in generating body movement?
Ankle, thigh, and trunk muscles
What does computerized dynamic posturography test?
The functioning of the vestibular system
Which system is most important for balance?
Visual system
What is the purpose of the homeostatic mechanism in preventing the COG from moving out of the LOS?
To maintain stability
Which system is the least important out of the three in maintaining balance?
Vestibular system
What happens to the pressure exerted on the surface if you are wobbly or move?
The pressure decreases
Which condition(s) are successful in maintaining balance?
Condition 1, 2, 3, and 4
What happens to the pressure exerted on the surface if you fall?
The pressure becomes zero
Which strategy involves moving the hips and changing the angle of the hips?
Hip strategy
Which strategy involves invoking muscles of the lower feet to move the body?
Ankle strategy
What are the two main patterns on how to maintain balance?
Ankle and hip strategy
What happens to the muscle activity during various maneuvers?
It is triggered very fast
Which system is responsible for detecting pressure when the subject is on a surface?
Somatosensory system
What can be controlled in the subject's visual system?
Open or close the subject's eye
Which of the following strategies involves invoking muscles of the lower feet to move the body?
Ankle strategy
What happens to the pressure exerted on the surface if you are wobbly or move?
The pressure decreases
Which of the following senses is mainly involved in maintaining balance?
Somatosensation
What happens to the pressure exerted on the surface if you fall?
The pressure becomes zero
Which system is the least important out of the three in maintaining balance?
Vestibular system
Which of the following conditions are successful in maintaining balance?
Condition 1, 2, 3, and 4
Which of the following is true about the center of gravity (COG)?
The COG moves in the same direction as the body movement
What are the two main patterns on how to maintain balance?
Ankle and hip strategy
Which system is responsible for detecting pressure when the subject is on a surface?
Somatosensory system
What does computerized dynamic posturography test?
Balance and posture
Which of the following is true about the limit of stability (LOS)?
The LOS forms a circle around the COG.
What happens if the COG falls beyond the limit of stability (LOS)?
The body will fall.
Which system is most important for balance?
Visual system
Which system is the least important for balance?
Vestibular system
Which system is responsible for detecting pressure when the subject is on a surface?
Somatosensation
What do the three systems (visual, vestibular, somatosensation) do in the posture stabilization system?
They provide feedback to the brain.
Which strategy involves moving the hips and changing the angle of the hips?
Changing the base of support
What happens to the pressure exerted on the surface if you fall?
The pressure remains the same
Which part of the brain is involved in selecting and adjusting muscle contractile patterns?
Both cortex and cerebellum
What are the two main patterns on how to maintain balance?
Which strategy involves moving the hips and changing the angle of the hips?
Hip strategy
What is the purpose of the homeostatic mechanism in preventing the center of gravity (COG) from moving out of the limit of stability (LOS)?
To maintain balance
What are the two main patterns on how to maintain balance?
Ankle strategy and hip strategy
What does computerized dynamic posturography test?
Balance conditions
Which muscles are involved in generating body movement?
Muscles of the upper body
What happens to the pressure exerted on the surface if you are wobbly or move?
Pressure decreases
Which of the following conditions are successful in maintaining balance?
Conditions 1, 2, 3, and 4
Which system is the least important out of the three in maintaining balance?
Vestibular system
What happens to the pressure exerted on the surface if you fall?
Pressure becomes zero
Which system is responsible for detecting pressure when the subject is on a surface?
Somatosensory system
Which of the following is the primary role of the center of gravity (COG) in maintaining balance?
To prevent the body from falling beyond the limit of stability (LOS)
Which of the following systems is the most important for balance?
Visual system
What happens if the COG falls beyond the limit of stability (LOS)?
The person will fall
Which of the following senses is mainly involved in maintaining balance?
Somatosensation
Which part of the brain is involved in selecting and adjusting muscle contractile patterns?
Both cortex and cerebellum
What does computerized dynamic posturography test?
The movement of the center of gravity (COG)
Which strategy involves moving the hips and changing the angle of the hips?
Expanding the base of support
Which system is responsible for detecting pressure when the subject is on a surface?
Somatosensation
What are the principal components of the posture stabilization system?
Visual system, vestibular system, somatosensation
What is the purpose of the homeostatic mechanism in preventing the COG from moving out of the limit of stability (LOS)?
To maintain balance
Which system is the least important out of the three in maintaining balance?
Vestibular system
What happens if the COG falls beyond the limit of stability (LOS)?
The subject loses balance and falls
What are the two main patterns on how to maintain balance?
Ankle strategy and hip strategy
What does computerized dynamic posturography test?
Muscle activity during various maneuvers
What happens to the pressure exerted on the surface if you are wobbly or move?
The pressure decreases
Which part of the brain is involved in selecting and adjusting muscle contractile patterns?
Motor cortex
Which system is most important for balance?
Somatosensory system
What happens to the muscle activity during various maneuvers?
Muscle activity is triggered very fast
Which of the following is the primary role of the center of gravity (COG) in maintaining balance?
To prevent the COG from moving out of the limit of stability (LOS)
Which of the following senses is mainly involved in maintaining balance?
Visual system
What is the purpose of the homeostatic mechanism in preventing the COG from moving out of the limit of stability (LOS)?
To maintain balance and prevent falling
Which system is the least important out of the three in maintaining balance?
Vestibular system
What are the principal components of the posture stabilization system?
Visual system, vestibular system, somatosensation
Which strategy involves moving the hips and changing the angle of the hips?
Somatosensory strategy
Which part of the brain is involved in selecting and adjusting muscle contractile patterns?
Cortex
Test your knowledge on the control of posture and balance with this quiz. Learn about the center of gravity and the limit of stability, and understand how they are related to maintaining an upright position.
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