試題詳解

59. Which of the following statements about skeleton is FALSE?
(A) Nematodes use hydrostatic skeleton to move.
(B) The exoskeletons of insect contain chitin.
(C) The osteoblasts are bone-building cells.
(D) The osteoclasts are bone-resorbing cells.
(E) The joint between the head of ulna and the humerus is a pivot joint.