11. Muscle spindles provide sensory information about muscle __________.A. fatigueB. force productionC. ph levels D. length 2. Fast Twitch fibers are:A. highly aerobic.B. efficient.C. resistant to fatigue.D. None of the above3. Myosin is known as the:A. thin filament.B. thick filament.C. dead filament.D. live filament.4. Actin is known as the:A. thin filament.B. thick filament.C. dead filament.D. live filament.5. The majority of strength gains in the first 6 weeks of training are due mostly to:A. neural adaptations.B. fiber type alterations.C. hyperplasia.D. hypertrophy.26. A bundle of muscle fibers is called:A. muscle belly.B. fascicle.C. sarcomere.D. sarcolemma.7. Muscle fibers are made up of:A. myofibrils.B. fascicles.C. sarcoplasmic reticulums.D. sarcolemmas.8. The repeating contractile unit of muscle is:A. sarcomere.B. sarcolemma. C. sarcoplasma. D. sarcohelix. 9. What theory is used to explain how muscles contract?A. Sliding Filament TheoryB. Sliding Concentric-EccentricC. Sliding Contraction TheoryD. Ball's theory of General Relativity and Life10. The motor neuron and all of the fibers it innervates is called:A. motor unit.B. sarcolemma.C. sarcomere.D. neuromuscular junction.311. Elite endurance runners are likely to have a majority of:A. Type 1 fibers.B. Type 2a fibers.C. Type 2b fibers.D. fast-twitch fibers.12. Elite sprinters are likely to have a majority of:A. Type 1 fibers. B. Type 2a fibers. C. Type 2b fibers. D. oxidative fibers. 13. Slow-twitch fibers are:A. highly aerobic. B. efficient. C. resistant to fatigue. D. All of the above 14. Intermediate fibers are also known as:A. Type 1.B. Type 2b.C. oxidative-glycolytic.D. glycolytic.15. Which of the following is TRUE?A. Fast-twitch fibers are more suited to strength and speed activities.B. People with higher % of fast-twitch fibers will respond quicker and usually increase strength greater than people with a lower % of fast-twitch fibers.C. Fiber type distribution (% of fast vs. slow) is mostly genetic.D. All of the above416. When a motor unit is stimulated it "fires" at 100% of its potential or it doesn't fire at all. This is known as:A. summation.B. tetany.C. progression.D. All or None Law17. Approximately what percentage of your strength gains can be accomplished by doing only one set to failure?A. 20-30%B. 30-40%C. 50-60%D. 70-80% 18.Hypertrophy:A. is an increase in cell (fiber) number.B. is an increase in cell (fiber) size.C. is responsible for most of the strength gains at the start of a resistance program.D. B and C19. Hyperplasia:A. is an increase in cell (fiber) number.B. is an increase in cell (fiber) size.C. is responsible for most of the strength gains at the start of a resistance program.D. B and C20. As the frequency of stimulations is increased, the muscle does not have time to relax between stimuliand the force generated becomes additive. This response or "ramping up" that leads to an increase in tension compared to a single twitch is known as:A. summation.B. progression.5C. bradycardia. D. proprioreception.21.When an electrical signal stimulates the muscle fiber, the sarcoplasmic reticulum releases _________.A. sodium.B. potassium.C. calcium.D. All of the above22. The electrical signal that travels through the nerve and stimulates the muscle fiber to contract is called what?A. Action potentialB. Postsynaptic pulseC. IPSPD. T-Wave23. Golgi Tendon Organs (GTO) provide sensory information about:A. summation.B. tension.C. ph Levels.D. angle of pull.24.The amount of force generated depends on the:A. number and types of fibers recruited.B. nature of the stimulation.C. initial length of the muscle.D. All of the above25. __________is responsible for the "stretch reflex."A. Muscle spindleB. Golgi tendon organ6C. Motor neuronD. None of the above26. Which type of muscle contraction develops no force?A. IsometricB. ConcentricC. EccentricD. None of the choices27. Which of the following best defines the central nervous system?A. all somatic nerves inside the bodyB. the brain and spinal cord C. the motor cortex and motor neurons D. None of the above 28.EMG is a common abbreviation that stands for which of the following?A. ElectromusculargramB. Excitation maximal gainC. Eccentric muscle group D. Electromyographic Which of the following is not associated with delayed onset muscle soreness (DOMS)?A. Inflammation within the muscleB. Eccentric contractionsC. Low ATP levelsD. High intensity exercise/movements that clients are not accustomed to performingQuestion 30 is True/False. For this question, choose A if the statement is true and B if the statement is false.30. Power Athletes such as throwers and jumpers have a higher percentage of type 1 fibers.A. True7B.