The cardiovascular system 心血管係統

    The circulatory system 循環係統

    The respiratory system 呼吸係統

    The digestive system 消化係統

    The (central) nervous system (中樞)神經係統

    The immune system 免疫係統

    The urinary system 泌尿係統

    The excretory system 排泄係統

    The reproductive / genital system 生殖係統

    The endocrine system 內分泌係統

    The muscular system / musculature 肌肉係統

    The bone & joint system 骨、關節係統