What is the perpendicular plate of the ethmoid?
The perpendicular plate of the ethmoid bone (vertical plate) is a thin, flattened lamina, polygonal in form, which descends from the under surface of the cribriform plate, and assists in forming the septum of the nose; it is generally deflected a little to one or other side.
What is the crista galli of the ethmoid bone?
The crista galli is a thick, midline, smooth triangular process arising from the superior surface of the ethmoid bone, projecting into the anterior cranial fossa. It separates the olfactory bulbs, which lie either side of it in the olfactory fossae of the cribriform plate.
What is the purpose of ethmoid bone?
The ethmoid bone is a cube-shaped bone located in the center of the skull between the eyes. It helps form the walls of the eye socket, or orbital cavity, as well as the roof, sides, and interior of the nasal cavity. Very light and sponge-like in texture, the ethmoid bone is one of the most complex bones of the face.
What surrounds the crista galli?
The crista galli (Latin: “crest of the rooster”) is the upper part of the perpendicular plate of the ethmoid bone, which rises above the cribriform plate. The falx cerebri (fold of the dura mater) attaches to the crista galli.
Where is the crista galli located?
The crista galli (Latin: “crest of the rooster”) is the upper part of the perpendicular plate of the ethmoid bone, which rises above the cribriform plate. The falx cerebri (fold of the dura mater) attaches to the crista galli.
Which is the upper plate of the ethmoid bone?
The crista galli (Latin: “crest of the rooster”) is the upper part of the perpendicular plate of the ethmoid bone, which rises above the cribriform plate. The falx cerebri (fold of the dura mater) attaches to the crista galli. The olfactory bulbs of the olfactory nerve lie on either side of the crista galli on top of the cribriform plate.
Where does the falx cerebri attach to the crista galli?
The falx cerebri (fold of the dura mater) attaches to the crista galli. The olfactory bulbs of the olfactory nerve lie on either side of the crista galli on top of the cribriform plate.
What is the medical definition of a perpendicular plate?
Medical Definition of perpendicular plate. 1 : a flattened bony lamina of the ethmoid bone that is the largest bony part assisting in forming the nasal septum. 2 : a long thin vertical bony plate forming part of the palatine bone — compare horizontal plate.
