Soc 14: The Muscular System Flashcards
What are the 3 types of muscles in the body?
Voluntary
Involuntary
Cardiac
What are all muscles made up of?
They are all made up of proteins
What are voluntary muscles?
They are muscles that are under your control and you choose when to contract and relax them. e.g triceps and biceps.
What are involuntary muscles?
Muscles that aren’t under our control and our bodies contract and relax them automatically. For example the muscles that help to move blood through your blood vessels.
What are cardiac muscles?
These are muscles controlled by our body only found on the walls of the heart. They keep your heart beated in a normal way.
Where is the Deltoid found?
In the shoulder.
Where is the pectoralis major found?
This is found in the chest.
Where is the latissimus dorsi found?
Lower regoin of the spine up to the humerus.
What are antagonistic pairs?
These are muscles which work together,
What three antagonistic pairs do I need to know for PE GCSE?
1) Tibialis anterior and Gastrocnemius
2) Bicep and tricep
3) Quadriceps and Hamstrings
Muscles can _____ but they can’t _____.
Muscles can pull but they can’t push.
What are the two types of muscle fibres we can have in our body?
Slow twitch fibres and fast twitch fibres
What are type 1 fibres?
Slow twitch fibres suited to low intensity and long distance running
What are type IIa fibres?
Fast twitch fibre muscles suited to anaerobic work. They will fatigue quickly
What are type IIx fibres?
Fast twitch muscle fibres but they create much more force than other fibres.
