Muscle Contraction Quiz

What are the three types of muscle tissue?

• Smooth, cardiac, and respiratory

• Smooth, cardiac, and skeletal

• Smooth, cardiac, and connective

• Smooth, skeletal, and nervous

Which type of muscle tissue is found in the walls of hollow visceral organs?

• Cardiac muscle tissue

• Nervous muscle tissue

• Smooth muscle tissue

• Skeletal muscle tissue

What is the specialized muscle tissue type found in the heart?

• Smooth muscle tissue

• Cardiac muscle tissue

• Skeletal muscle tissue

• Nervous muscle tissue

Which type of muscle tissue is mostly voluntary?

• Skeletal muscle tissue

• Cardiac muscle tissue

• Nervous muscle tissue

• Smooth muscle tissue

What is the main function of skeletal muscles?

• Supporting weight and fending off gravity

• Pushing fluid and material around in hollow organs

• Pumping blood throughout the body

• Controlling voluntary movements

What is the basic unit of muscle contraction?

• Myofibril

• Sarcomere

• Fascicle

• Myofilament

What are the two types of protein strands involved in muscle contraction?

• Actin and myosin

• Tropomyosin and troponin

• Calcium and ATP

• Sarcolemma and sarcoplasmic reticulum

What is the role of calcium in muscle contraction?

• It binds to ATP and ADP

• It binds to sarcolemma and sarcoplasmic reticulum

• It binds to tropomyosin and troponin

• It binds to actin and myosin

What happens when myosin binds to actin during muscle contraction?

• The myosin releases stored energy

• The calcium is pumped back into the sarcoplasmic reticulum

• The sarcomere expands

• The muscle relaxes

What is the role of ATP in muscle contraction?

• It pumps calcium into the sarcoplasmic reticulum

• It binds to actin and myosin

• It binds to tropomyosin and troponin

• It releases stored energy in myosin