Fast Twitch

fibers that contract/relax very quickly

• voluntary

• involuntary

• fast twitch

• slow twitch

Produce large forces for a short period of time

• Fast-twitch fibres

• Slow-twitch fibres

A muscle that has low endurance.

• Fast-twitch fibres

• Slow-twitch fibres

Which muscle type can exert more force?

• Fast-twitch fibres

• Slow-twitch fibres

What type of muscle fibers contract and relax very quickly?

• Voluntary

• Involuntary

• Fast-twitch

• Slow-twitch

Which type of muscle fibers are known to produce large forces for a short period of time?

• Fast-twitch fibers

• Slow-twitch fibers

• Intermediate fibers

• Cardiac fibers

A muscle that has low endurance is likely composed of which type of fibers?

• Fast-twitch fibers

• Slow-twitch fibers

• Cardiac fibers

• Smooth muscle fibers

Which muscle type can exert more force?

• Fast-twitch fibers

• Slow-twitch fibers

• Cardiac fibers

• Smooth muscle fibers

Fast-twitch muscle fibers are primarily used in which type of activities?

• Endurance running

• Weightlifting

• Yoga

• Marathon running

What is the primary energy source for fast-twitch muscle fibers during short bursts of activity?

• Fat

• Protein

• Glycogen

• Vitamins