sinus

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sinus

sinus cavity or hollow space in the body, usually filled with air or blood. In humans the paranasal sinuses, mucus-lined cavities in the bones of the face, are connected by passageways to the nose and probably help to warm and moisten inhaled air. When drainage from them is blocked, as after a cold, these sinuses often become infected, a condition called sinusitis. The accumulation of pus results in pressure, headaches, pain, and general discomfort. In invertebrates one of the spaces among the muscles and viscera through which blood returns to the heart is also known as a sinus.

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sinus

A Dictionary of Biology | 2004 | Â© A Dictionary of Biology 2004, originally published by Oxford University Press 2004. (Hide copyright information) Copyright

sinus A saclike cavity or organ in an animal, such as the sinus venosus.

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The Concise Oxford Dictionary of English Etymology | 1996 | | Â© The Concise Oxford Dictionary of English Etymology 1996, originally published by Oxford University Press 1996. (Hide copyright information) Copyright

sinus (path.) abscess, etc. XVI; (bot., anat.) cavity, depression XVII. — L. sinus semicircular fold, bosom, bay.

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T. F. HOAD. "sinus." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. 22 Dec. 2009 <http://www.encyclopedia.com>.

T. F. HOAD. "sinus." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. (December 22, 2009). http://www.encyclopedia.com/doc/1O27-sinus.html

T. F. HOAD. "sinus." The Concise Oxford Dictionary of English Etymology. 1996. Retrieved December 22, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O27-sinus.html

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	Nonseptic lateral sinus thrombosis: the role of the otolaryngologist.(ORIGINAL ARTICLE)(Case study) Magazine article from: Ear, Nose and Throat Journal; 1/1/2009
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