WordNet

a distinctive but intangible quality surrounding a person or thing; "an air of mystery"; "the house had a neglected air"; "an atmosphere of defeat pervaded the candidates headquarters"; "the place had an aura of romance" (同)aura, atmosphere
a mixture of gases (especially oxygen) required for breathing; the stuff that the wind consists of; "air pollution"; "a smell of chemicals in the air"; "open a window and let in some air"; "I need some fresh air"
once thought to be one of four elements composing the universe (Empedocles)
medium for radio and television broadcasting; "the program was on the air from 9 til midnight"; "the president used the airwaves to take his message to the people" (同)airwave
the region above the ground; "her hand stopped in mid air"; "he threw the ball into the air"
expose to warm or heated air, so as to dry; "Air linen"
broadcast over the airwaves, as in radio or television; "We cannot air this X-rated song" (同)send, broadcast, beam, transmit
be broadcast; "This show will air Saturdays at 2 P.M."
small room in which a monk or nun lives (同)cubicle
a device that delivers an electric current as the result of a chemical reaction (同)electric cell
a room where a prisoner is kept (同)jail cell, prison cell
(biology) the basic structural and functional unit of all organisms; they may exist as independent units of life (as in monads) or may form colonies or tissues as in higher plants and animals
any small compartment; "the cells of a honeycomb"
a small unit serving as part of or as the nucleus of a larger political movement (同)cadre
a short excursion (a walk or ride) in the open air; "he took the dogs for an airing"
one of the eight bones of the cranium; a small bone filled with air spaces that forms part of the eye sockets and the nasal cavity (同)ethmoid_bone
affected manners intended to impress others; "dont put on airs with me" (同)pose

PrepTutorEJDIC

〈U〉『空気』,大気 / 《the ~》『空中』,空間,空(sky) / 《古》〈C〉そよ風,微風(breeze) / 《文》〈C〉(音楽の)ふし,旋律(melody) / 〈C〉様子,態度,風さい / 《複数形で》気どった様子 / 〈衣服など〉'を'空気にさらす,風にあてる / 〈部屋〉‘に'風を通す / 〈うわさ・意見など〉'を'言いふらす
(刑務所の)『独房』;(修道院の)小さい独居室 / (ミツバチの)みつ房,巣穴 / 小さい部屋 / 『細胞』 / 電池 / 花粉室 / (共産党などの)細胞
空気にあてること,虫干し / 《単数形で》外出,散歩 / (知識・意見などの)公開,周知

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2016/03/09 18:16:05」(JST)

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The ethmoidal sinuses or ethmoidal air cells of the ethmoid bone are one of the four paired paranasal sinuses. They are a variable in both size and number of small cavities in the lateral mass of each of the ethmoid bones and cannot be palpated during an extraoral examination.^[1] They are divided into the anterior, middle and posterior groups (see below). The ethmoidal air cells consist of numerous thin-walled cavities situated in the ethmoidal labyrinth and completed by the frontal, maxilla, lacrimal, sphenoidal, and palatine bones. They lie between the upper parts of the nasal cavities and the orbits, and are separated from these cavities by thin bony laminae.^[2]

Groups of sinuses

The groups of the ethmoidal cells are air cells:^[2]

The posterior group (sometimes the posterior ethmoidal sinus) drains into the superior meatus above the middle nasal concha; sometimes one or more opens into the sphenoidal sinus.
The middle group (sometimes the middle ethmoidal sinus) drains into the middle meatus of the nose on or above the bulla ethmoidalis.
The anterior group (sometimes the anterior ethmoidal sinus) drains into the middle meatus of the nose by way of the infundibulum.

Development

The ethmoidal cells (sinuses) are not present at birth, however by 2 years of age they are recognisable through the use of Computerised Tomography (CT) scanning.^[3]

Innervation

The ethmoidal air cells receive sensory fibers from the anterior and posterior ethmoidal nerves, and the orbital branches of the pterygopalatine ganglion, which carry the postganglionic parasympathetic nerve fibers for mucous secretion from the facial nerve.

Haller cell

Haller cells are infraorbital ethmoidal air cells lateral to the lamina papyracea. These may arise from the anterior or posterior ethmoidal sinuses.

Pathology

Ethmoid sinus cancer that has spread to the lungs

Ethmoid sinus cancer that has spread to the lymph nodes

Acute ethmoiditis in childhood and ethmoidal carcinoma may spread superiorly causing meningitis and cerebrospinal fluid leakage or it may spread laterally into the orbit causing proptosis and diplopia.^[4]

Additional images

Ethmoid bone from the right side.
Left orbicularis oculi, seen from behind.
Lateral wall of nasal cavity; the three nasal conchæ have been removed.
Paranasal sinuses
Ethmoid cells
Ethmoid sinus. Ethmoidal air cells.Deep dissection. Superior view.

References

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

^ Illustrated Anatomy of the Head and Neck, Fehrenbach and Herring, Elsevier, 2012, page 64
^ ^a ^b Otorhinolaryngology, Head and Neck Surgery, Anniko, Springer, 2010, page 188
^ Moore, K.L Et al(2014). Clinically Oriented Anatomy. Baltimore: Page960
^ Human Anatomy, Jacobs, Elsevier, 2008, page 210

External links

Anatomy figure: 33:04-07 at Human Anatomy Online, SUNY Downstate Medical Center
Anatomy photo:33:st-0711 at the SUNY Downstate Medical Center

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「篩骨蜂巣」

Ethmoidal sinus
	Paranasal sinuses
	Coronal section of nasal cavities.
Details
Nerve	posterior ethmoidal nerve
Identifiers
Latin	Cellulae ethmoidales,; labyrinthi ethmoidales
MeSH	A04.531.621.267
Dorlands; /Elsevier	c_19/12225634
TA	A06.1.03.005
FMA	71958
	Anatomical terms of bone [edit on Wikidata]