SPS612 - Chapter 2

Which of the following best describes in vivo experiments?

• a) Experiments that are conducted outside of a living organism or in an artificial environment

• b) Experiments that involve the use of electromyography (EMG)

• c) Experiments that are used to diagnose injuries or disorders

• d) Experiments that are conducted within a living organism

Which of the following is a characteristic of pennate muscles?

• a) Muscle fibers run parallel to each other

• b) Muscle fibers are arranged obliquely to the tendon

• c) Muscle fibers are short and spindle-shaped

• d) Muscle fibers are found in the heart and are involuntary

What is the angle of pennation?

• a) The angle between the muscle fibers and the tendon

• b) The angle of the tendon as it inserts into bone

• c) The angle between the muscle and the bone it attaches to

• d) The angle of the muscle belly as it tapers to the tendon

Which of the following is an example of passive insufficiency in the hamstrings?

• a) Difficulty to fully flex the knee while keeping the hip flexed

• b) Difficulty in fully extending the knee while keeping the hip flexed

• c) Difficulty to maintain knee extension while keeping the hip extended

Which force is the greatest following the force-velocity relationship?

• a) Eccentric force

• b) Isometric force

• c) Concentric force

• d) All the above have the same force

Passive tension in a muscle is generated by which of the following?

• a) Cross-bridge formation between actin and myosin filaments

• b) The contractile activity of the muscle fibers

• c) The elasticity of the muscle connective tissue

• d) The activation of the muscle fibers

Electromechanical delay is defined as the time between which of the following?

• a) The onset of muscle activation

• b) The onset of muscle force production

• c) The peak of muscle force production