1) Which type of joint is found at the knee? a) Fixed b) Hinge c) Ball and Socket d) Patially  2) Which of the following is a feature of cartilage, but NOT of bone? a) it is flexible b) it contains calcium salts c) it contains proteins d) it contains living cells 3) Muscles that work in opposition to cause movement at a joint are described as a) opposite b) automatic c) antagonistic d) pairs 4) When the human arm in straightened which of the following happens? a) Biceps contracts and Triceps contracts b) Biceps contracts and Triceps relaxes c) Biceps relaxes and Triceps relaxes d) Biceps relaxes and Triceps contracts 5) Which of the following does not happen after exercising? a) Muscles become larger b) Muscle tone is reduced c) Joints become more flexible d) More capillaries are produced in muscles

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