6.2 JOINTS and MUSCLES movements

Select the correct answers that show the actions of muscles when the arm is bent.

• Biceps relaxed. Triceps contracted.

• Biceps relaxed. Triceps relaxed.

• Biceps contracted. Triceps relaxed.

• Biceps contracted. Triceps contracted.

Select the correct answer that show the actions of muscles when the arm is straightened.

• Biceps relaxed. Triceps contracted.

• Biceps relaxed. Triceps relaxed.

• Biceps contracted. Triceps relaxed.

• Biceps contracted. Triceps contracted.

Hinge joints allow the movements of limbs in one plane or one direction.

• TRUE

• FALSE

Which one is Ball-and-Socket joint? Tick the correct answer(s).

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X connects triceps muscle to the elbow bone. What is X?

• Ligament

• Tendon

The diagram shows part of human knee. What is the function of synovial fluid?

• Connects the two bones

• Provide nutrients to the cartilage

• Connect bone and tendon

• Reduces friction between two bonesThis is a wrong answer

The diagram shows part of human elbow. What is the function of cartilage?

• To connect two bones

• To provide nutrients

• To connect bone and muscle

• To reduce friction between two bone

Which of below contains of mitochondria that generates energy for contraction and relaxation?

• Tendon

• Muscle

• Ligament

What causes osteoarthritis?

• Break down of ligaments

• Break down of cartilage

Tendon is strong but inelastic (not stretchable).

• TRUE

• FALSE