Sinus


 
 

A sinus is a pouch or cavity in any organ or tissue, or an abnormal cavity or passage caused by the destruction of tissue. The term is applied to a large number and variety of structures in the human body, such as:-

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  • The air cavities in the cranial bones, especially those near the nose and connecting to it. These are the paranasal sinuses and are usually what is meant when a person's "sinuses" are referred to.
  • A dilated portion of a blood vein, such as inside the braincase.
  • A chronically infected tract such as a fistula.
  • The spaces surrounding the organs in spiders which are filled with haemolymph

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    Organ: An organ is the following:...

    Tissue: The word tissue has several meanings:...

~ Table of Content ~

Introduction
See also
 
FR: Sinus (anatomie)


 

~ Related Subjects ~

Tissue (1) - Organ (1) -
 

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