Muscular System

Which connective tissue surrounds fasicles?

• epimysium

• endomysium

• perimysium

Which connective tissue surrounds the whole muscle?

• epimysium

• endomysium

• perimysium

Which connective tissue surrounds individual muscle fibers?

• epimysium

• endomysium

• perimysium

Actin myofilaments are

• attached to the z disk

• are found primarily in the h zone

• are thicker than myosin myofilaments

• all of these options

Which structure provides an attachment site for calcium?

• actin

• troponin

• tropomyosin

• m-line

Which area of a sarcomere contains only actin?

• Z disk

• A band

• H zone

• I band

Which part of the sarcomere does not shorten during muscle contraction?

• A band

• H zone

• I band

• None of these

Skeletal muscles...

• Require energy in order to contract

• Require energy in order to relax

• Relax when calcium ions are transported into the sarcoplasmic reticulum

• All of these

What type of muscle is this?

• Skeletal

• Cardiac

• Smooth

Which type of muscle is this?

• Smooth

• Skeletal

• Cardiac