The term 'vena trachealis' refers to the vein that runs alongside the trachea. There are a few different synonyms for this phrase, including the tracheal vein, the tracheobronchial vein, and the bronchotracheal vein. These terms all describe the same structure, which plays an important role in the transport of blood from the trachea and bronchi to the heart. Understanding the terminology related to the vena trachealis is important for healthcare professionals and researchers working in fields related to the respiratory system and cardiovascular health.