Podcast
Questions and Answers
What type of fibers do sprinters typically possess a high percentage of?
What type of fibers do sprinters typically possess a high percentage of?
- Fast-twitch fibers (correct)
- Type IIa fibers
- Slow-oxidative fibers
- Slow-twitch fibers
What is the ratio of muscle fibers to motor neurons in eye muscles?
What is the ratio of muscle fibers to motor neurons in eye muscles?
- 5:1
- 1:1 (correct)
- 10:1
- 2:1
What is the result of endurance and resistance training on fast fibers?
What is the result of endurance and resistance training on fast fibers?
- They become more oxidative
- They remain unchanged (correct)
- They are converted to slow fibers
- They are lost
What is the primary difference between hypertrophy and hyperplasia?
What is the primary difference between hypertrophy and hyperplasia?
At what age does the rate of muscle mass loss increase?
At what age does the rate of muscle mass loss increase?
What type of muscle contraction occurs when a muscle produces force but its length increases?
What type of muscle contraction occurs when a muscle produces force but its length increases?
What is the role of muscles in the musculoskeletal system?
What is the role of muscles in the musculoskeletal system?
During muscle contraction, what happens to the distance between the Z-lines of the sarcomere?
During muscle contraction, what happens to the distance between the Z-lines of the sarcomere?
What is the term for the theory that explains muscle contraction?
What is the term for the theory that explains muscle contraction?
What is the muscle function that allows for gradation of muscle strength?
What is the muscle function that allows for gradation of muscle strength?
What percentage of total body weight is made up of skeletal muscles?
What percentage of total body weight is made up of skeletal muscles?
What is a characteristic of skeletal muscles?
What is a characteristic of skeletal muscles?
What is the relationship between the number of motor units recruited and the force generated?
What is the relationship between the number of motor units recruited and the force generated?
What is the function of the Golgi tendon organ in muscle?
What is the function of the Golgi tendon organ in muscle?
What is the effect of initial muscle length on force generation?
What is the effect of initial muscle length on force generation?
How does the speed of movement relate to the type of muscle fibers present?
How does the speed of movement relate to the type of muscle fibers present?
What is the relationship between the velocity of movement and the force generated?
What is the relationship between the velocity of movement and the force generated?
What is the function of the muscle spindle?
What is the function of the muscle spindle?
What surrounds individual muscle fibers?
What surrounds individual muscle fibers?
What is the pocket formed around the motor neuron by the sarcolemma called?
What is the pocket formed around the motor neuron by the sarcolemma called?
What is broken down by myosin ATPase during muscle contraction?
What is broken down by myosin ATPase during muscle contraction?
What type of muscle fibers are also known as fast-glycolytic fibers?
What type of muscle fibers are also known as fast-glycolytic fibers?
What is the storage site for calcium ions in muscle fibers?
What is the storage site for calcium ions in muscle fibers?
What is the term for the depolarization of the muscle fiber membrane in response to acetylcholine release?
What is the term for the depolarization of the muscle fiber membrane in response to acetylcholine release?
