The Muscular System: The Motors of the Body

Which is the less movable attachment site?

• origin

• insertion

• aponeurosis

Which is the more moveable attachment site?

• origin

• insertion

• tendon

Fast twitch muscle fibers reach peak tension up to 7 times slower.

• True

• False

What does EMG stands for?

• Electromcdonalgraph

• Electramyograding

• Electromyography

• Electromyograding

What happens when muscle is in isometric contraction?

• shortening

• lengthening

• constant

• expanding

Select all the factors affecting muscle force development.

• Muscle geometry, cross-sectional area (PCSA), angle of pennation

• Recruitment of motor units by central nervous systems to match movement requirement

• Muscle fiber type

• Muscle colour

• Muscle length

The force-velocity relationship states that fast movement produce low force output.

• True

• False

The length-tension relationship describes that the amount of muscle’s maximum isometric tension depends on the muscle colour.

• True

• False

What is electromechanical delay?

• time between ending of a neural stimulus and tension development by the muscle

• time between muscle tension development by the muscle force

• time between arrival of a neural stimulus and tension development by the muscle

Select all of the phases in the Stretch shortening cycle.

• Isometric phase

• Eccentric phase

• Amortization phase

• Concentric phase

• Acclimatization phase