B5 - Ch 1.5 - Antagonistic Muscles

What is the role of the agonist muscle?

• It produces force but stays the same length

• It relaxes to allow movement

• It lengthens while contracting

• It contracts to create movement

What is the antagonist muscle's role during movement?

• It lengthens while contracting

• It relaxes to allow movement

• It produces force but stays the same length

• It contracts to create movement

Which muscle is the agonist during the upward phase of a bicep curl?

• Hamstrings

• Quadriceps

• Biceps

• Triceps

What type of contraction is demonstrated by the triceps when shooting in basketball?

• Isometric contraction

• Concentric contraction

• Eccentric contraction

• None of the above

During a long jump takeoff, which muscle contracts to create plantar flexion?

• Gastrocnemius

• Tibialis Anterior

• Quadriceps

• Hamstrings

What type of contraction is demonstrated by the quadriceps during the downward phase of a squat?

• None of the above

• Isometric contraction

• Concentric contraction

• Eccentric contraction

What is the role of the antagonist muscle during a bicep curl?

• It contracts to create movement

• It relaxes to allow movement

• It produces force but stays the same length

• It lengthens while contracting

Which muscle is the antagonist during the upward phase of a bicep curl?

• Quadriceps

• Hamstrings

• Biceps

• Triceps

What type of contraction is demonstrated by the hamstrings when the leg bends at the knee joint?

• Isometric contraction

• Concentric contraction

• None of the above

• Eccentric contraction

During a long jump takeoff, which muscle relaxes to allow plantar flexion to occur?

• Hamstrings

• Quadriceps

• Tibialis Anterior

• Gastrocnemius