Dictionary > Ethmoidal labyrinth

Ethmoidal labyrinth

Definition
noun, plural: ethmoidal labyrinths
Either of the paired lateral masses of the ethmoid bone, consisting of the ethmoid air cells
Supplement
The ethmoidal labyrinth is one of the three parts of the ethmoid bone. The other parts include the cribriform plate and the perpendicular plate. But the ethmoidal labyrinth is the one that forms the bulk of the ethmoid bone. It consists of lateral series of tiny air chambers called ethmoid air cells. The ethmoid air cells are fluid-filled thin-walled cavities that are arranged into anterior, middle, and posterior clusters. They are involved in the warming and moistening of the inspired air. They are also associated with voice resonance such that with age they grow resulting, in the resonance of the voice to increase with age, particularly until puberty.
There are also long, narrow, curved bone shelves projecting from the medial surface of the ethmoid labyrinth. They are the middle nasal concha and the superior nasal concha. The conchae (together with the independent bone inferior nasal concha) provide support to the mucous membrane that line the nasal cavity.
Variant(s):

  • ethmoid labyrinth
  • labyrinth of ethmoid

Synonym(s):

  • labyrinthus ethmoidalis
  • ectethmoid
  • ectoethmoid
  • lateral mass of ethmoid bone
  • Compare:

    • cribriform plate
    • perpendicular plate

    See also:

  • ethmoid bone
  • ethmoid air cells
  • nasal concha
  • middle nasal concha
  • paper plate
  • bulla ethmoidalis
  • Related term(s):

    • ethmoid


    You will also like...

    squirrel
    Animal Water Regulation

    Animals adapt to their environment in aspects of anatomy, physiology, and behavior. This tutorial will help you understa..

    Plant Water Regulation
    Plant Water Regulation

    Plants need to regulate water in order to stay upright and structurally stable. Find out the different evolutionary adap..

    Water Cycle
    The Water Cycle

    The water cycle (also referred to as the hydrological cycle) is a system of continuous transfer of water from the air, s..

    Adaptation Tutorial
    Adaptation Tutorial

    Adaptation, in biology and ecology, refers to the process or trait through which organisms or the populations in a habit..

    Plant biology
    Plant Biology

    Plantlife can be studied at a variety of levels, from the molecular, genetic and biochemical level through organelles, c..

    Early Earth
    The Origins of Life

    This tutorial digs into the past to investigate the origins of life. The section is split into geological periods in the..

    Related Articles...

    No related articles found

    See all Related Topics