Quiz on the Muscular System

What type of muscle tissue is striated and voluntary?

• Connective tissue

• Cardiac muscle

• Smooth muscle

• Skeletal muscle

Which of the following is NOT a function of muscle tissue?

• Maintain posture

• Produce movement

• Generate heat

• Store energy

What is the primary role of myofibrils in skeletal muscle fibers?

• Contract and generate force

• Store calcium ions

• Protect muscle fibers

• Provide blood supply

What is the term for the point of attachment of a muscle on the bone that moves?

• Origin

• Insertion

• Fascicle

• Tendon

Which model describes the mechanism of muscle contraction?

• Elasticity model

• Tension model

• Cross bridge model

• Sliding filament model

What is a motor unit?

• A muscle that stabilizes joints

• A type of muscle contraction

• One motor neuron and all the muscle cells it innervates

• A group of muscle fibers

Which type of muscle contraction occurs when the muscle shortens?

• Eccentric

• Isometric

• Isotonic

• Concentric

What type of muscle fiber is characterized as slow oxidative?

• Slow oxidative fibers

• Fast oxidative fibers

• Fast glycolytic fibers

• Intermediate fibers

Which connective tissue surrounds each muscle fiber?

• Fascia

• Epimysium

• Perimysium

• Endomysium

What is the role of the sarcoplasmic reticulum in muscle fibers?

• Store glucose

• Provide structural support

• Release and sequester calcium ions

• Generate action potentials