The Respiratory System (呼吸系统)
The Digestive System (消化系统)
The Circulatory System (循环系统)
The Urinary System (泌尿系统)
The Reproductive System (生殖系统)
The Nervous System (神经系统)
The Blood System (血液系统)
The Locomotor System (运动系统)
The Endocrine System (内分泌系统)
The Sensory System (感官系统)
Psychiatry (精神医学)