Podcast
Questions and Answers
What is the ability of a muscle to be stretched or to increase in length called?
What is the ability of a muscle to be stretched or to increase in length called?
- Contractility
- Extensibility (correct)
- Elasticity
- Contraction
Which component of muscle provides resistance when the muscle is passively stretched?
Which component of muscle provides resistance when the muscle is passively stretched?
- Parallel elastic component (PEC) (correct)
- Series elastic component (SEC)
- Sarcolemma
- Sarcoplasm
What is the term for the ability to develop tension by muscle?
What is the term for the ability to develop tension by muscle?
- Elasticity
- Contractility (correct)
- Contraction
- Extensibility
Which structure acts as a spring to store elastic energy when a tensed muscle is stretched?
Which structure acts as a spring to store elastic energy when a tensed muscle is stretched?
What is the specialized cytoplasm of a muscle fiber called?
What is the specialized cytoplasm of a muscle fiber called?
Which term refers to the membrane surrounding a muscle fiber?
Which term refers to the membrane surrounding a muscle fiber?
What is the main function of the sarcoplasm in each muscle fiber?
What is the main function of the sarcoplasm in each muscle fiber?
What is the purpose of the cross-bridges that form between the actin and myosin filaments during muscle contraction?
What is the purpose of the cross-bridges that form between the actin and myosin filaments during muscle contraction?
What is the key difference between fast twitch (FT) and slow twitch (ST) muscle fibers?
What is the key difference between fast twitch (FT) and slow twitch (ST) muscle fibers?
Why are the slow twitch (ST) motor units the first to be activated, even during rapid limb movements?
Why are the slow twitch (ST) motor units the first to be activated, even during rapid limb movements?
Which of the following is a key characteristic of the myofibrils within each muscle fiber?
Which of the following is a key characteristic of the myofibrils within each muscle fiber?
How do the number of cross-bridges formed between actin and myosin filaments relate to muscle function?
How do the number of cross-bridges formed between actin and myosin filaments relate to muscle function?
During low-intensity exercise, which type of muscle fibers are primarily recruited by the central nervous system?
During low-intensity exercise, which type of muscle fibers are primarily recruited by the central nervous system?
As the intensity of exercise increases and fatigue sets in, which order are the different types of motor units activated?
As the intensity of exercise increases and fatigue sets in, which order are the different types of motor units activated?
What is the maximum amount of force that a muscle can generate before actually lengthening as the resistance is increased?
What is the maximum amount of force that a muscle can generate before actually lengthening as the resistance is increased?
During most activities of daily living, which of the following statements is true?
During most activities of daily living, which of the following statements is true?
At what point does maximum muscular power occur?
At what point does maximum muscular power occur?
What is the relationship between muscular force and velocity of muscle shortening?
What is the relationship between muscular force and velocity of muscle shortening?
What is the primary benefit of warming up before an athletic endeavor?
What is the primary benefit of warming up before an athletic endeavor?
At what temperature is muscle function most efficient?
At what temperature is muscle function most efficient?
What is the primary reason for the shift in the force-velocity curve when muscle temperature is elevated?
What is the primary reason for the shift in the force-velocity curve when muscle temperature is elevated?
What is the most appropriate load for training designed to increase muscular power over a range of resistance?
What is the most appropriate load for training designed to increase muscular power over a range of resistance?
What is the definition of muscular power provided in the text?
What is the definition of muscular power provided in the text?
What is the potential danger of elevating body temperature beyond 38.5°C (101°F) during strenuous exercise?
What is the potential danger of elevating body temperature beyond 38.5°C (101°F) during strenuous exercise?
