The endolymphatic duct is a small tube-like structure in the inner ear that plays a crucial role in helping to maintain a stable environment for the sensory organs involved in hearing and balance. Synonyms for the endolymphatic duct could include the inner ear duct, vestibular duct, or semicircular canal duct. Other related terms may include the cochlear duct, which is adjacent to the endolymphatic duct and is responsible for transmitting sound waves to the brain, or the utricle and saccule, structures within the inner ear that contain receptors for detecting changes in head position and movement. Accurate terminology is important for medical professionals to precisely discuss and diagnose issues related to this complex structure in the ear.