Prab at 20:53, 16 March 2025

2025-03-16T20:53:19Z

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	== Ethmoidal_labyrinth ==		== Ethmoidal_labyrinth ==
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	File:Gray151.png\|Gray's Anatomy illustration of the ethmoidal labyrinth		File:Gray151.png\|Gray's Anatomy illustration of the ethmoidal labyrinth
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'''Ethmoidal labyrinth''' is a complex structure located in the [[ethmoid bone]] of the [[skull]]. It is composed of numerous [[ethmoid air cells]] that are divided into anterior, middle, and posterior groups. The ethmoidal labyrinth plays a crucial role in the [[respiratory system]], particularly in the process of [[olfaction]] or sense of smell.

==Etymology==
The term "ethmoidal labyrinth" is derived from the Greek words "ethmos," meaning sieve, and "eidos," meaning form or shape. This is in reference to the numerous perforations found in the ethmoid bone, which give it a sieve-like appearance.

==Structure==
The ethmoidal labyrinth is a part of the ethmoid bone, which is one of the bones that make up the [[skull]]. It is located between the [[orbit]] and the [[nasal cavity]], and is composed of numerous small compartments or cells known as [[ethmoid air cells]]. These cells are divided into three groups: anterior, middle, and posterior.

The anterior group of cells drain into the [[semilunar hiatus]] of the [[nasal cavity]], while the middle group drain into the [[middle meatus]]. The posterior group of cells drain into the [[superior meatus]].

==Function==
The primary function of the ethmoidal labyrinth is to aid in the process of olfaction, or the sense of smell. The [[olfactory bulb]] and [[olfactory tract]], which are responsible for transmitting smell information from the nose to the brain, are located in the ethmoid bone.

The ethmoidal labyrinth also plays a role in the [[respiratory system]], as it helps to warm and humidify the air that is inhaled through the nose. This is important for maintaining the health of the respiratory tract and preventing infections.

==Related Terms==
* [[Ethmoid bone]]
* [[Ethmoid air cells]]
* [[Olfaction]]
* [[Respiratory system]]
* [[Skull]]
* [[Orbit]]
* [[Nasal cavity]]
* [[Semilunar hiatus]]
* [[Middle meatus]]
* [[Superior meatus]]
* [[Olfactory bulb]]
* [[Olfactory tract]]

[[Category:Anatomy]]
[[Category:Respiratory system]]
[[Category:Olfactory system]]

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Ethmoidal labyrinth - Revision history

Prab at 20:53, 16 March 2025

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