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HTHSCI 1H06A: MSK8 – Balance Questions and Answers
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HTHSCI 1H06A: MSK8 – Balance Questions and Answers
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the ability to maintain the center of gravity of a body within the base of support withWhat is balance?
minimal postural sway
What are the 3 types of balance? Static, dynamic adaptation, static adaption
What is dynamic adaptation? Changing center of gravity as you're moving
What is static adaptation? Not moving but the center of gravity is off base because you are holding something
What part of the brain maintains
Medial aspect of the cerebellum (axial skeleton)
balance?
What are the 3 inputs to balance? vision, proprioception, vestibular
What characterizes visual input? Info from parafoveal regions go into the cerebllum
What characterizes Muscle spindles and Golgi tendon organs in postural muscles and lower limb muscles
proprioceptive input? associated with balance (tripod) via the spinocerebellar tract
What is the tripod? Sartorius + gracilis (front) + semitendinosus (back)
What characterizes vestibular
Vestibular apparatus (CNVIII) = collection of structures
input?
What does the macula of saccule
vertical position
(small sac) detect?
What does the macula of utricle
side to side position
(little pouch) detect?
What does the macula contain? otoliths - "stones of the inner ear"
Bending of cilia causes... Action potentials to detect position of gravity
What do the semicircular canals Detect you moving through space because fluid starts to flow (detected by hair cells
do? in the Crista of Ampulla)
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