S & M Systems: Muscle Fibre Types Flashcards
1
Q
The s______ of a contraction is dependant on the number of m____ u____ recruited by the brain.
A
Strength
Motor units
2
Q
The _______ the number of motor units recruited the _______ the force of contraction.
A
Greater
3
Q
What are slow oxidative muscle fibres? [5]
A
- structurally designed to store oxygen in myoglobin
- process oxygen in the mitochondria
- work aerobically
- produce a small amount of force
- resist fatigue for a long period of time
4
Q
What are fast oxidative glycolytic muscle fibres?
A
- produce a large amount of force quickly
* do have capacity to resist fatigue
5
Q
What are fast glycolytic muscle fibres?
A
- work an aerobically
- large stores of phosphocreatine for rapid energy production and largest amount of force
- fatigue quickly
6
Q
What is phosphocreatine?
A
A high energy compound stored in the muscle cell used as a fuel for very high-intensity energy production
7
Q
What is mitochondria?
A
A structure in sarcoplasm responsible for aerobic energy production.
8
Q
What is myoglobin?
A
A protein responsible for transporting oxygen to the mitochondria.
