joints

Question 1

cartilage

Answer 1

Prevents bones from hitting against each other

Acts as a shock absorber

Question 2

Ligaments

Answer 2

• They connect bone to bone and help keep the joints together.

Question 3

The Elbow joint

Answer 3

Hinge joint.

• Articulating bones are humerus, radius and ulna.
• Allows bending (flexion) and straightening (extension).
• Muscles which move the elbow are biceps and triceps.

Question 4

The Knee joint

Answer 4

Hinge joint.

• Articulating bones are femur, tibia (the patella is not classed as part of the joint, nor is the fibula).
• Allows bending (flexion) and straightening (extension).
• Muscles which move the knee are quadriceps and hamstrings.

Question 5

The Hip joint

Answer 5

• Ball and socket joint.
• Articulating bones are pelvis and femur (head of femur is ‘ball’ and cup in pelvis ‘socket’)
• Allows a large range of movement in all directions.
• Many muscles are used to move the hip joint, including the gluteals.

Question 6

The shoulder joint

Answer 6

• Ball and socket joint.
• Articulating bones are humerus and scapula (Clavicle is not part of the shoulder joint).
• Allows a large range of movement in all directions.
• Many muscles are used to move the shoulder joint, including the deltoid, trapezius and the latissimus dorsi.

Question 7

What does synovial fluid do?

Answer 7

Lubricate joints

Question 8

What are ligaments made from?

Answer 8

Tough elastic fibres

Question 9

Name the 4 things you can find in between joints?

Answer 9

• Cartilage
• Synovial fluid
• Ligaments
• Tendons