Exam 2 Kahoot Flashcards
Active force generation in a muscle is maximal…..
around resting length (optimnal amount of overlap)
(at its shortest length there is not enough force to be able to be generated)
(Longest length - there is not enough overlap)
Motor Units for skeletal muscles are all the same size
True or False
False
Larger motor units innervate more muscle fibers
Henneman’s Size Principal describes HOW the size of a motor unit is defined
True or False
False
How motor units are recruited from small to large
Motor Unit rotation describes how muscles produce rotation about joints
True or False
False
Relation between number of active motor units and mean frequency of firing
Synergistic activation of muscles may result from motor unit synchronization
True or False
True
Mechanically gated …….. channels create a receptor potential in hair cells
Na+
Ca2+
K+
Cl-
K+
The semicircular canals are like linear accelereometers?
True or False
False
angular/rotational motion not linear
The ‘Blind Spots’ contains
No rods or cones
The primary visual cortex in the left hemisphere recieves imput from the right visual field
True or False
True
A saccade is a slow eye movement used to track objects
True or False
False
Fastest eye movement there is
Kahoot from Tuesday
Activating postural muscles prior to shift in COP is called a
Predictive Stragety
Anticipatory Stragety
Reactive Stragety
anticipatory stragety
Input from the equilibrium triad is weighted based in the situation to maintain psotural equlibrium
True
According to mackey and robinovitch postural steadiness measures are NOT correlated with balance and recovery measures
True
You unexpecteckly accelrate due to a bump when skating and you automatically bend your knees. This is……
Suspension Stragety
Engaging a postural response will always prevent a fall
False
