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Questions and Answers
What is the main component of a motor unit?
What is the main component of a motor unit?
- Motor neuron (correct)
- Tendon
- Capillary
- Muscle fiber
Which type of muscles have many fibers per motor unit?
Which type of muscles have many fibers per motor unit?
- Muscles responsible for quick movement
- Muscles responsible for fine movement
- Muscles responsible for complex movement
- Muscles responsible for gross movement (correct)
What is the function of motor unit territory?
What is the function of motor unit territory?
- To concentrate the force of motor units in a specific area
- To distribute the force of motor units over a larger area (correct)
- To increase the speed of muscle contraction
- To decrease the blood supply to muscle fibers
Which motor unit type is named after the fiber type it innervates?
Which motor unit type is named after the fiber type it innervates?
What is the relationship between motoneuron soma size and fiber type?
What is the relationship between motoneuron soma size and fiber type?
Which fiber type is fatigue resistant?
Which fiber type is fatigue resistant?
What is the main difference between type I and type II muscle fibers?
What is the main difference between type I and type II muscle fibers?
What determines the conduction velocity of a nerve signal?
What determines the conduction velocity of a nerve signal?
Which type of muscle fiber has the fastest contraction speed?
Which type of muscle fiber has the fastest contraction speed?
What is the main difference in ATP breakdown between type IIA and type IIX fibers?
What is the main difference in ATP breakdown between type IIA and type IIX fibers?
What determines the cross-bridge cycle speed in muscle fibers?
What determines the cross-bridge cycle speed in muscle fibers?
Which type of muscle fiber has the highest specific force?
Which type of muscle fiber has the highest specific force?
What is the main fuel for non-oxidative metabolism in muscle fibers?
What is the main fuel for non-oxidative metabolism in muscle fibers?
What determines the contraction speed of myosin heavy chain in muscle fibers?
What determines the contraction speed of myosin heavy chain in muscle fibers?
What determines the ability of muscle fibers to undergo rapid and large release and uptake of calcium?
What determines the ability of muscle fibers to undergo rapid and large release and uptake of calcium?
What type of muscle fiber has the highest peak power and at what velocity does it occur?
What type of muscle fiber has the highest peak power and at what velocity does it occur?
What type of training can increase the size of all fiber types in a muscle?
What type of training can increase the size of all fiber types in a muscle?
What is the test whereby one pedals as hard as possible against a given or a set force?
What is the test whereby one pedals as hard as possible against a given or a set force?
What type of muscle fibers have similar myofilament and myofibrillar density to slow twitch fibers?
What type of muscle fibers have similar myofilament and myofibrillar density to slow twitch fibers?
What type of fibers have the ability to generate more peak force at a faster rate?
What type of fibers have the ability to generate more peak force at a faster rate?
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