Muscle Contractions

The type of muscle contraction where the muscle tenses but does not shorten.  

• Isometric
• Isotonic
• Contraction
• relaxation

When a muscle shortens under tension, it is called_______

• isotonic eccentric contraction
• isotonic concentric contraction
• isometric concentric contraction
• isometric eccentric contraction

When a muscle is under tension, it is not possible for it to be lengthening

• True
• False

Isometric exercises cannot build muscle.

• False
• True

As the athlete lowers the weights, his biceps undergo-

• isometric concentric contraction
• isotonic eccentric contraction
• isometric contraction

As this athlete jumps into the air, his quadriceps undergo-

• concentric contraction
• eccentric contraction
• isometric contraction

Which uses more energy?

• isotonic contractions
• isometric contractions

What type of contraction is happening here??

• isostabilize

• isokinetic

• isotonic

• isometric

What is the most effective of the 3 to build muscle?

• isotonic

• isometric

• isokinetic

• all three are equal

Movement is enabled by muscle

• contraction
• atrophy
• subduction
• torpor