Joints in the Human Body

If your body were a tall building, your skeleton would be:

• The beams and joists that hold it up.

• The plumbing and electrical systems.

• The foundations that anchors it to the ground.

• The apartments and offices inside it.

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Which term best describes the joints at the top of your skull?

• Motionless

• Flexible

• Rubbery

• Elastic

Which type of joint gives you the largest range of motion?

• Pivot joint

• Ball-and-socket joint

• Hinge joint

• Gliding joint

The joints in your knees and elbows are most similar to:

• A wheel

• A door hinge

• A nut and bolt

• A clock's pendulum

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Which pair of joints has the most in common?

• Your ankle joints and your shoulder joints.

• The joints in your spine and your hips.

• Your elbow joints and your knee joints.

• Your wrist joints and your shoulder joints.

What might happen if you snapped or tore one of your ligaments?

• Your joints would not be able to move.

• Your bones would be in danger of breaking.

• Your joints might slide out of place easily.

• You would become double-jointed.

The joint that allows you to chew food is most similar to a:

• Ball-and-socket joint

• Hinge joint

• Pivot joint

• Immovable joint

A disease called osteoarthritis occurs when the cartilage between joints wears away. What can you infer about osteoarthritis?

• It prevents joints from moving smoothly.

• It causes joints to dislocate easily.

• It causes bones to become more brittle.

• It reduces joints' range of motion.

If you have a "slipped disc," you have a:

• Head injury

• Shoulder injury

• Knee injury

• Back injury

The main purpose of synovial fluid is:

• Keeping bones moist

• Lubrication

• Strengthening tendons and cartilage

• Protecting the spinal cord