Muscle and Joint Knowledge

What are antagonistic muscles?

• Muscles that only contract without opposing any action.

• Muscles that work together to perform the same action.

• Antagonistic muscles are pairs of muscles that oppose each other's actions.

• Muscles that are inactive during movement.

Name two examples of antagonistic muscles.

• Pectorals and lats

• Biceps and deltoids

• Calves and shins

• Biceps and triceps, quadriceps and hamstrings

What is the primary function of the biceps?

• Rotating the hip and flexing the knee.

• Extending the knee and lifting the shoulder.

• Flexing the elbow and rotating the forearm.

• Stabilizing the spine and bending the wrist.

What is the primary function of the triceps?

• To flex the shoulder

• To stabilize the spine

• The primary function of the triceps is to extend the elbow.

• To rotate the wrist

Describe a hinge joint.

• A hinge joint permits rotation around a central axis.

• A hinge joint is a type of ball-and-socket joint.

• A hinge joint allows movement in multiple planes.

• A hinge joint allows movement in one plane, permitting flexion and extension.

Give an example of a hinge joint in the human body.

• Hip joint

• Wrist joint

• Shoulder joint

• Elbow joint

What is a ball and socket joint?

• A hinge joint that connects two bones.

• A ball and socket joint is a joint that allows for rotational movement in multiple directions, consisting of a spherical head fitting into a cup-like socket.

• A joint that only allows movement in one direction.

• A type of joint found only in the skull.

Name a ball and socket joint in the human body.

• Knee joint

• Wrist joint

• Shoulder joint

• Elbow joint

How do antagonistic muscles work together?

• Antagonistic muscles work together by contracting and relaxing in opposition to control movement.

• They relax simultaneously to allow for movement.

• They only contract to create movement.

• They work independently without any coordination.

What type of movement does a hinge joint allow?

• Rotation in multiple planes

• Abduction and adduction

• Circumduction in all directions

• Flexion and extension in one plane