Ethmoid bone
Damage to the cribriform plate, which is part of the ethmoid bone in the skull, can harm the sense of smell. The olfactory nerve fibers pass through tiny openings in the cribriform plate to reach the olfactory bulb in the brain. Damage to this area can disrupt these nerve fibers and affect the sense of smell.
Cribriform plate
The ethmoid bone contains the cribriform plate, which is a delicate, sieve-like structure located in the roof of the nasal cavity. It forms a part of the ethmoid bone and allows for the passage of olfactory nerves from the nasal cavity to the brain.
The bones that give passage to the olfactory nerve fibers are the cribriform plate of the ethmoid bone. The olfactory nerve fibers pass through small openings called cribriform foramina in the cribriform plate, allowing them to enter the nasal cavity and transmit sensory information related to smell.
The holes in the cribriform plate are called olfactory foramina, and they allow the olfactory nerve fibers to pass from the nasal cavity to the brain. This allows for the sense of smell to be transmitted to the brain for processing.
the olfactory bulb is located above the cribriform plate
A fracture involving the cribriform plate of the ethmoid bone can result in loss of smell. The cribriform plate is a thin, porous structure in the skull that separates the nasal cavity from the brain and contains the olfactory nerves responsible for transmitting smell signals. If this structure is damaged, it can disrupt the olfactory pathway and lead to anosmia (loss of smell).
The cribriform plate, a part of the ethmoid bone in the skull, has many tiny perforations that allow olfactory nerve fibers to pass through. This plate is critical for the sense of smell as these nerve fibers transmit information from the olfactory receptors in the nasal cavity to the brain.
Olfactory foramina are small openings in the cribriform plate of the ethmoid bone that allow the olfactory nerves to pass through and reach the nasal cavity. These foramina are essential for transmitting sensory information related to smell from the nasal cavity to the brain.
Small unmyelinated axons from olfactory receptor bipolar neurons (originating in the olfactory epithelium of the nasal cavity) pass through small holes in the cribriform plate of the ethmoid bone. These small nerves are primary sensory neurons that synapse with the olfactory bulb of Cranial Nerve 1 (olfactory nerve) which lies on top of the cribriform plate. These olfactory receptor neurons bind to different types of odorant molecules and, depending on the type of receptor and odorant molecule, fire action potentials which are transmitted to the brain and perceived as recognizable odors. Specifically these are called the Fila Olfactoria.
The cribiform plate and crista galli are part of the Ethmoid Bone. The Cribiform Plate forms the superior surface of the Ethmoid Bone which helps form the roof of the nasal cavities and floor of the anterior cranial fossa. The Crista Galli projects superiorly from the Ethmoid Bone between the Cribiform Plates. The outermost covering of the brain is attached to the Crista Galli and keeps the brain in place.