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Updated: May 3, 2025
There is some difficulty in describing the ethmoid bones; but we shall not, however, deviate far from the truth if we give the following account: A great number of small hollow pedicles proceed from and form around the cribriform plate; as they move downwards, they project into distinct vesicles or cavities, smaller and more numerous behind, fewer in number and larger in front; and each of them not a simple cavity, but more or less convoluted, while the long walls of those cells are of gossamer thinness, and as porous as gauze.
He holds it to be essentially an inflammatory affection, attacking peculiarly the mucous membrane of the nose, and extending thence through the cribriform plate of the ethmoid bones to the interior part of the brain, and so giving rise to a derangement of the nervous system as a necessary consequence.
It is wedged between the bones of the face and those of the cranium, and locks together fourteen different bones. It bears a remarkable resemblance to a bat with extended wings, and forms a series of girders to the arches of the cranium. The ethmoid bone is situated between the bones of the cranium and those of the face, just at the root of the nose. It forms a part of the floor of the cranium.
The development of the bridge of the nose is no doubt directly connected with the development of the front of the cerebral part of the skull and ethmoid bone, which sooner or later carries the nasal bones with it.
There are forms of nasal disorder caused by larvae, which some native surgeons in India regard as a chronic and malignant ulceration of the mucous membranes of the nose and adjacent sinuses in the debilitated and the scrofulous. Worms lodging in the cribriform plate of the ethmoid feed on the soft tissues of that region.
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