"Ethmoidal" Quotes from Famous Books
 ... floor of the cranium consists of a series of cartilage bones, the basi-occipital (b.o.), basi-sphenoid (b.sp.), pre-sphenoid (p.sp.), and in front, the ethmoid (eth.), which sends down a median plate, not shown, in the figure, to form the nasal septum between right and left nasal passages. Like extended wings on either side of the basi-occipital are the ex-occipital ...
— Text Book of Biology, Part 1: Vertebrata • H. G. Wells
... palate into the nasal chamber, and very directly into the mouth. The nasal roof is formed by two bones situated between the eyes; the sphenoid or wedge-bone, which is connected with all other bones of the head, and the ethmoid or sieve-like bone. The structure of these two bones, especially of the ethmoid, consists of very thin plates or laminae, forming a mass of air cavities which communicate by small openings with the nasal cavity below. Thus, the vibrations in the nose are transmitted to the air ...
— Resonance in Singing and Speaking • Thomas Fillebrown |
