70 在施行肩關節外展(shoulder abduction)活動時,需伴隨下列何種動作,方能達最大範圍活動?
(A)肱骨內轉(internal rotation of humerus)和肩胛往下轉(downward rotation of scapula)
(B)肱骨內轉(internal rotation of humerus)和肩胛往上轉(upward rotation of scapula)
(C)肱骨外轉(external rotation of humerus)和肩胛往下轉(downward rotation of scapula)
(D)肱骨外轉(external rotation of humerus)和肩胛往上轉(upward rotation of scapula)