Joints

What is the main function of joints in the body?

• To store excess nutrients

• To regulate body temperature

• To produce hormones

• Facilitate movement and provide flexibility by connecting bones together.

Answer explanation

Joints facilitate movement and provide flexibility by connecting bones together.

What is the role of synovial fluid in joints?

• Synovial fluid absorbs shock in joints

• Synovial fluid increases friction between cartilage surfaces

• Synovial fluid lubricates the joints, reduces friction between the articular cartilage surfaces, and provides nutrients to the cartilage cells.

• Synovial fluid is not present in joints

Answer explanation

Synovial fluid lubricates the joints, reduces friction between the articular cartilage surfaces, and provides nutrients to the cartilage cells.

How does synovial fluid help in reducing friction in joints?

• Synovial fluid reduces friction by lubricating the joint surfaces.

• Synovial fluid attracts more friction to the joint surfaces.

• Synovial fluid creates a barrier that increases friction in the joints.

• Synovial fluid increases friction by drying out the joint surfaces.

Answer explanation

Synovial fluid reduces friction by lubricating the joint surfaces.

Which type of joint is found in the knee?

• Gliding joint

• Pivot joint

• Hinge joint

• Ball joint

Answer explanation

The correct type of joint found in the knee is a hinge joint, allowing movement in one direction only.

Why is it important to keep joints healthy and mobile?

• To promote stiffness, encourage injuries, and support immobility

• To limit movement, increase pain, and hinder overall functionality

• To maintain flexibility, prevent injuries, reduce pain, and support overall mobility and functionality.

• To reduce flexibility, cause injuries, and increase pain

Answer explanation

It is important to keep joints healthy and mobile to maintain flexibility, prevent injuries, reduce pain, and support overall mobility and functionality.

Which type of joint is found in the shoulder?

• Hinge joint

• Ball and socket joint

• Pivot joint

• Gliding joint

Answer explanation

The correct type of joint found in the shoulder is a ball and socket joint, allowing for a wide range of motion in multiple directions.

Which type of joint is found in the fingers?

• Ball joint

• Pivot joint

• Hinge joint

• Gliding joint

Answer explanation

The correct type of joint found in the fingers is a hinge joint, allowing movement in one direction only, similar to how fingers bend.

Joints are...

• A part of our bones.

• The place where two bones meet.

• The muscle.

Answer explanation

Joints are the place where two bones meet, allowing movement and flexibility in the body.

ALL joints in our body are movable.

• True

• False

Answer explanation

Not all joints in our body are movable, some are fixed like the joints in the skull. Therefore, the statement is false.

What protects the contact points of two bones?

• Tendons

• Ligaments

• Cartilage

Answer explanation

Cartilage protects the contact points of two bones by providing a smooth surface for movement and cushioning against impact.