2 of 72 of 7 Items
Question
Slow-twitch muscles are needed for
(1 point)
Responses
high-intensity, quick, short bursts of energy.
high-intensity, quick, short bursts of energy.
endurance activities.
endurance activities.
speed or power activities.
speed or power activities.
low endurance and short-duration exercises.
endurance activities.
3 of 73 of 7 Items
Question
A group of muscle fibers responsible for a specific movement is called
(1 point)
Responses
a motor unit.
a motor unit.
a striated group.
a striated group.
a fast-twitch unit.
a fast-twitch unit.
a slow-twitch unit.
a motor unit.
4 of 74 of 7 Items
Question
When a muscle fiber contracts as much as it can it is called the _________________.
(1 point)
Responses
maximum potential principle
maximum potential principle
contraction principle
contraction principle
muscular capacity principle
muscular capacity principle
all or none principle