Spina nasalis posterior is a medical term that refers to a bony nasal spine located at the back of the nasal cavity. This anatomical structure is also known by various synonyms, including posterior nasal spine, horizontal plate of the palatine bone, and posterior nasal septum. The spina nasalis posterior serves as a landmark for medical professionals during surgical procedures, such as nasal septoplasty or maxillary sinus surgeries. Understanding these synonyms is crucial for effective communication and accurate medical documentation. It allows healthcare providers to convey precise information and coordinate seamlessly, ensuring optimal patient care and safety.