Posture Test 2

which of the following shows the postural control of balance steps in order:

• detect, adjust, detect

• adjust, feedback, detect

• detect, adjust, feedback

• feedback, detect, adjust

match the postural control steps to their descriptions

• detect - feedback from muscle sensors to the CNS after adjusting muscular system

• adjust - commands to muscular system to make changes in our posture

• feedback - sensors give information about current position/motion

• detect - sensors give information about current position/motion

which 3 systems do we use for input when detecting posture/position

• vesitbular system

• visual system

• somatosensory system

• musculoskeletal system

which part of the brain, known as the "master controller" makes postural corrections based on sensory information?

which of the following are motor output factors

• strength - amount of force the muscle produces

• cerebellum - master controller

• rate of force development - how fast does muscle generate peak force

• somatosensory system - sensors in muscles & joints

what is quiet standing?

• arms relaxed & eyes closed

• usually swaying forward & backward

• arms relaxed & eyes open

• doing jumping jacks

when swaying forward:

gravity wants ________(dorsi/plantar)

muscular effort force wants (dorsi/plantar)

COP moves (forward/backward)

where does the GRF act?

• acts at COM

• starts at COP and aims for COM

• acts at middle of foot

• acts outside of base of support

what is COP velocity?

• the sway path/total time

• the whole sway path untangled

• medial-lateral movement/anterior-posterior movement

• anterior-posterior movement/total time

older adults sway more ________(M-L or A-P) than younger adults