Soc - 14 Flashcards
What are muscle fibres?
They make up voluntary (skeletal) muscle; divided into type 1, type 2a and type 2x.
What are type 1 muscles?
Slow twitch muscle fibres; suited to low intensity work, e.g. marathon running, as they can be used for a long period without fatiguing.
What are type 2a muscle fibres?
They are fast twitch muscle fibres used in anaerobic work; can be improved through endurance training to increase their resistance to fatigue.
What are type 2x muscle fibres?
They are fast twitch muscle fibres used in anaerobic work and can generate much greater force than other fibre types, but fatigue quickly.
What is myoglobin?
A red pigment that transports oxygen to the muscles.
What is an antagonistic pair?
Muscles that work together to create movement.
What is the agonist?
The muscle that contracts
What is the antagonist?
The muscle that relaxes
