Component 1 (the Muscular System): Soc 14 Flashcards
Define muscle fibres?
Make ip voluntary (skeletal) muscle; divided into type l, type lla and type llx
What is type l?
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 is type lla?
Fast twitch muscle fobres used in anaerobic work; can be improved through endurance training to increase their resistance to fatigue
What is type llx?
Fast twitch muscle fibres used in anaerobic work and can generate much greater force than aother fibre types, but fatigue quickly
Define Myoglobin?
A red pigment that transports oxygen to the muscles
What are the three categories of the muscle system?
- voluntary
- involuntary
- cardiac
What is the voluntary msucles?
- Muscles that are your control, you can choose when to contract to relax them. All these muscles are attached to the skeleton via tendon
- Muscles made up of cylinders shaped fibres and are usually long and thin but get shorter and fatter
What are involuntary muscles?
- They are msucles that cannot be controlled e.g your heart
What are Cardiac muscles?
Muscles only found in the wall of your heart
What is vascular muscles?
Muscles relating to the blood vessels
What are antagonistic pairs?
Muscles that work together to create movement
What are the two antagonistic pairs called?
- One Muscle contracts (agonist)
- The other relaxes (antagonist)
What is the Fulcrum?
The point around which the lever rotates
What is the articulation?
The state of having a joint; being a joint
What is the articulate?
Acts as a joint