Muscle fibres

Question 1

what are muscle fibres?

Answer 1

muscle fibres are cells in the muscle that control the force and frequency of the muscle

Question 2

what are the 2 types of muscle fibres?

Answer 2

slow twitch muscle fibres and fast twitch muscle fibres

Question 3

describe slow twitch muscle fibres

Answer 3

slow twitch muscle fibres produce low amounts of force but can contract for a long period of time.
They also fatigue slowly as they make good use of the oxygen.

Question 4

describe fast twitch muscle fibres

Answer 4

fast twitch muscle fibres can produce high amounts of force but can contract for a short period of time.
They also fatigue quickly as they make poor use of oxygen

Question 5

give some example of when slow twitch muscle fibres are needed

Answer 5

long distance running
rowing
long distance cycling

(make sure you say its over a long distance)

Question 6

give some examples of when fast twitch fibres are needed

Answer 6

sprinting
long/high/triple jump
sprint swim