The ethmoid is a delicate bone located between the eyes, forming part of the skull and the nasal cavity. It plays a crucial role in supporting the structure of the nose and separating the nasal cavity from the brain. The ethmoid bone contains small air-filled spaces called ethmoidal sinuses, which help to lighten the weight of the skull and contribute to the respiratory system. In addition to its structural functions, the ethmoid bone is involved in the sense of smell. It houses the olfactory bulbs, which are responsible for detecting odors. This connection makes the ethmoid an important component of both the olfactory system and the overall anatomy of the human skull.