Module 2 Quiz

During contraction of a muscle the sarcomere does what?

• Explodes

• Lengthens

• Shortens

• Creates Inflammation

What neurotransmitter is released for muscle contraction to take place?

• Acetylcholine

• Dopamine

• Serotonin

• Glutamate

What takes place during the cross bridge formation?

• Troponin attaches to the M Line

• Troponin attaches to Tropomyosin

• Myosin attaches to Actin

• The sarcomere lengthens

What binds to myosin to detach it from actin?

• ADP

• ATP

• Creatine

• Phosphate

When relaxation of the muscle occurs calcium will travel back to be stored in what?

• Sarcoplasmic Reticulum (SR)

• Sarcolemma

• Myofibril

• Motor Neuron

During aerobic exercise you have an abundance of what in your muscle cells?

• Oxygen

• Isotonic

• Isometric

• Acid

The region of the sarcomere that doesn't change in length and represents overlap of myosin and actin.

• I band

• Z line

• A band

• H band

The boundary of each sarcomere is represented by this.

• M band

• Z line

A motor unit is made up of what?

• neuromuscular junction

• motor neuron and all muscle fibers connected to it

• All Sarcomeres in the Myofibril

• All Myofibrils in the sarcolemma

What ion has to bind to Troponin to allow for the cross-bridge mechanism?

• Sodium

• Calcium

• Phosphate

• Oxygen