Podcast
Questions and Answers
What is the first type of motor units recruited during muscle activation?
What is the first type of motor units recruited during muscle activation?
- Random motor units
- Largest motor units
- Midsize motor units
- Smallest motor units (correct)
Which type of muscle contraction involves increasing tension without a change in muscle length?
Which type of muscle contraction involves increasing tension without a change in muscle length?
- Isometric (correct)
- Isotonic
- Concentric
- Eccentric
What is the role of muscle tone in the body?
What is the role of muscle tone in the body?
- To produce gross movements
- To assist in muscle relaxation
- To maintain stabilization, balance, and posture (correct)
- To increase muscle size
During eccentric muscle contractions, the muscle is:
During eccentric muscle contractions, the muscle is:
Which factor helps return a muscle to its resting length by performing opposite actions?
Which factor helps return a muscle to its resting length by performing opposite actions?
What is the purpose of recruiting minimum motor units needed during muscle activation?
What is the purpose of recruiting minimum motor units needed during muscle activation?
What is the term for the greatest tension produced at a muscle's 'optimal length'?
What is the term for the greatest tension produced at a muscle's 'optimal length'?
What factor affects the tension produced by a muscle?
What factor affects the tension produced by a muscle?
Which type of contraction involves a 'staircase-like' increase in tension over the first 30-50 stimulations?
Which type of contraction involves a 'staircase-like' increase in tension over the first 30-50 stimulations?
What does 'Tetanus' refer to in muscle contractions?
What does 'Tetanus' refer to in muscle contractions?
What is the term for the phenomenon where a second, immediate stimulation following relaxation leads to slightly higher maximum tension?
What is the term for the phenomenon where a second, immediate stimulation following relaxation leads to slightly higher maximum tension?
How does sarcomere length affect active tension in muscles?
How does sarcomere length affect active tension in muscles?
What term is used to define ONE motor neuron and ALL of the muscle fibers that it controls?
What term is used to define ONE motor neuron and ALL of the muscle fibers that it controls?
Which type of tetanus involves continuous stimulation of a muscle fiber without allowing it to relax completely?
Which type of tetanus involves continuous stimulation of a muscle fiber without allowing it to relax completely?
What does the size principle in motor unit recruitment state?
What does the size principle in motor unit recruitment state?
What mechanism is responsible for altering force production in muscles?
What mechanism is responsible for altering force production in muscles?
Which term describes the addition of one muscle twitch to another, resulting in a more powerful contraction?
Which term describes the addition of one muscle twitch to another, resulting in a more powerful contraction?
How does summation tetanus differ from incomplete tetanus?
How does summation tetanus differ from incomplete tetanus?
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