Muscular System Review

Which of these is NOT a major task of the muscular system?

• Movement for your body

• Maintaining posture

• Heat production for the body

• Making red blood cells

Which of the following words means 'the ability to recoil or bounce back to the original shape'?

• excitability

• extensibility

• contractability

• elasticity

Which type of muscle is involuntary and makes up many of your internal organs?

• skeletal

• gastrointestinal

• smooth

• cardiac

Which type of muscle(s) is/are striated?

• skeletal

• smooth

• cardiac

• extremity

Which membrane covers an individual muscle fiber?

• endomysium

• epimysium

• perimysium

Your gastrocnemius and soleus work together to flex your calf muscle. If one of them is the prime mover, then the other muscle is the __________.

• antagonist

• tendon

• agonist

• synergist

What are the two types of myofilaments?

• calcium & sodium

• actin & myosin

• troponin & tropomyosin

• sarcomere & sarcolemma

What attaches muscle to bone?

• ligaments

• sliding filaments

• tendons

• sarcomeres

Which two structures block the active site on an actin filament?

• z-line & the m-line

• troponin & tropomyosin

• calcium & myosin

• actin & perimysium

The ______________ separate one sarcomere from another.

• cross bridges

• M-lines

• Z-lines

• active sites