Muscular System Quiz

What type of muscle tissue is striated and voluntary?

• Smooth muscle

• Connective tissue

• Skeletal muscle

• Cardiac muscle

Which muscle type forms the heart?

• Cardiac muscle

• Smooth muscle

• Skeletal muscle

• Epithelial tissue

What is the primary function of skeletal muscle?

• Transport nutrients

• Store energy

• Protect organs

• Generate heat

What surrounds each muscle fiber?

• Perimysium

• Fascia

• Endomysium

• Epimysium

What is the term for the ability of muscle tissue to respond to a stimulus?

• Contractility

• Excitability

• Extensibility

• Elasticity

Which of the following is NOT a functional characteristic of muscle tissue?

• Contractility

• Excitability

• Elasticity

• Flexibility

What is the role of calcium ions in muscle contraction?

• They stabilize actin

• They provide energy

• They bind to troponin

• They form cross bridges

What is the sliding filament model of contraction primarily based on?

• Calcium ion release

• ATP hydrolysis

• Thick filaments sliding over thin filaments

• Muscle fibers shortening

What happens during the relaxation phase of muscle contraction?

• Calcium is released

• ATP is consumed

• Calcium is removed by the calcium pump

• Muscle fibers shorten

Which structure is responsible for transmitting the action potential into the muscle fiber?

• Sarcoplasm

• T tubules

• Sarcoplasmic reticulum

• Myofibrils