which of the following statements are true of the appendicular skeleton. a) The radius articulates with the ulna and the metacarpals. b) One hand contains 14 phalanges and one foot contains 13 phalanges. c) The scapula and clavicle attach the arm to the axial skeleton. d) The two hip bones are fused at the public midline. e) The tibia and fibula are to the leg what the radius and ulna are to the arm. f) The ilium, ischium, and pubis all contribute to the acetabulum to attach the tibia. g) Both the humerus and femur have projections for muscle attachment. h) The calcaneus supports the base of the thumb. i) The proximal tibia is part of the knee joint. j) The foot contains eight carpals and the wrist contains seven tarsals.