Ethmoid bone

Study entry

Parts

Unpaired, irregular bone, with little participation in the neurocranium (the cribriform plate and the crista galli, in the midline of the anterior cranial fossa) and greater in the viscerocranium (nasal cavity and orbits). It has air cells.

Joints

With the frontal and the sphenoid, in the anterior cranial fossa; and with the vomer in the nasal septum.

Source: cap. 8, «Cráneo» y «Cráneo: fosas craneales» y tabla 8-2

Other structures in this region

• Thyroid cartilage
• Cricoid cartilage
• Arytenoid, corniculate and cuneiform cartilages
• Epiglottis (epiglottic cartilage)
• Membranes and ligaments of the larynx (conus elasticus and quadrangular membrane)
• Frontal bone
• Parietal bone
• Occipital bone