Understanding Muscles and Connective Tissues

What is the primary function of a ligament in the human body?

• To connect muscle to bone

• To connect bone to bone

• To contract and produce movement

• To form thin filaments in muscle fibers

Which of the following structures connects muscle to bone?

• Ligament

• Tendon

• Sarcomere

• Actin

What is a muscle fiber?

• A protein that forms thick filaments

• A single muscle cell that contracts to produce movement

• A tough band of fibrous tissue connecting bones

• A protein that forms thin filaments

Which protein forms thin filaments within muscle fibers?

• Myosin

• Actin

• Sarcomere

• Tendon

What role does myosin play in muscle contraction?

• It forms thin filaments

• It connects muscle to bone

• It forms thick filaments and interacts with actin

• It provides stability to joints

What is the basic functional unit of a muscle fiber?

• Tendon

• Ligament

• Sarcomere

• Actin

Which of the following best describes the sliding filament theory?

• Ligaments sliding over tendons

• Actin and myosin filaments sliding past each other to shorten the muscle

• Muscle fibers sliding over bones

• Tendons sliding over ligaments

What happens when myosin heads attach to actin?

• The muscle fiber elongates

• The muscle fiber contracts

• The sarcomere disintegrates

• The tendon becomes more flexible

Which of the following is NOT a component of a sarcomere?

• Actin

• Myosin

• Tendon

• Z-line

What is the name of the Thick filaments?

• Actin
• Myosin
• Myoglobin
• Titan