Joint & Muscle Action

What is the role of the agonist muscle in a muscle pair?

• It relaxes to allow movement.

• It contracts to produce movement.

• It stabilises the movement.

• It connects bones to muscles.

Which of the following best describes the function of antagonist muscles?

• They contract to produce movement.

• They stabilise the movement.

• They relax to allow movement.

• They connect muscles to bones.

What is the role of fixator muscles in muscle movement?

• They contract to produce movement.

• They relax to allow movement.

• They stabilise the movement.

• They transfer force to bones.

In the example of picking up a glass of water, which muscle acts as the agonist?

• Triceps

• Biceps

• Forearm muscles

• Deltoid

When lifting a glass of water, which muscle acts as the antagonist?

• Biceps

• Triceps

• Forearm muscles

• Quadriceps

What is the primary function of tendons in the muscular system?

• To connect muscles to bones

• To stabilise joints

• To produce movement

• To relax muscles

Which of the following is NOT a role of muscles in antagonistic pairs?

• Agonist

• Antagonist

• Fixator

• Conductor

What happens to the antagonist muscle when the agonist muscle contracts?

• It also contracts.

• It relaxes.

• It stabilises the joint.

• It transfers force to the bone.

Which of the following is an example of a fixator muscle in action?

• Biceps contracting to lift a glass

• Triceps relaxing to allow movement

• Forearm muscles stabilising the arm

• Quadriceps extending the knee

What is the process called when muscles move bones by pulling on them?

• Muscle relaxation

• Muscle contraction

• Muscle stabilisation

• Muscle extension