The normal position of the uterus is maintained by four ligaments: , , and the uterosacral ligament.

填空题The major salivary glands comprise three large paired masses: , and .

填空题The essential structures of articulation(synovial joint) consists of , and .

填空题The parietal pleura is divided into four portions: , and the mediastinal pleura and the cupula of pleura.

填空题The superior orbital fissure communicates with the orbit and transmits , , and the ophthalmic nerve.

填空题The pharynx may be divided into three parts: , and .