Muscle Contraction Quiz

Which myofilament is thin?

• Collagen

• Elastin

• Actin

• Myosin

Which myofilament is attached to the z line? 

• Actin

• Myosin

Which part of the sarcomere is the light band?

• I band

• H zone

• Z line

• M line

Which part of a sarcomere contains only thin filaments?

• I band

• A band

• H zone

• M zone

Which part of a sarcomere is the wall between two different sarcomeres?

• M line

• Z line

Which part of the sarcomere is the dark band?

• I band

• H zone

• Z line

• A band

What is the smallest unit of a muscle to contract?

• Sarcomere

• Myofibril

• Muscle fiber

• Myofilaments

Which myofilament has hands to grab the other one?

• Actin

• Myosin

Which part of a sarcomere contains BOTH actin and myosin myofilaments?

• A band

• I band

• H zone

• M line

Which myofilament pulls the other one when a muscle contracts?

• Actin pulls myosin

• Myosin pulls actin