Organs » Sinuses

Sinuses

Article Excerpts about Sinuses

Sinuses are hollow air spaces in the human body. When people say, "I'm having a sinus attack," they usually are referring to symptoms in one or more of four pairs of cavities, or sinuses, known as paranasal sinuses. These cavities, located within the skull or bones of the head surrounding the nose, include the

• Frontal sinuses over the eyes in the brow area
• Maxillary sinuses inside each cheekbone
• Ethmoid sinuses just behind the bridge of the nose and between the eyes
• Sphenoid sinuses behind the ethmoids in the upper region of the nose and behind the eyes

Each sinus has an opening into the nose for the free exchange of air and mucus, and each is joined with the nasal passages by a continuous mucous membrane lining. Therefore, anything that causes a swelling in the nose-an infection, an allergic reaction, or an immune reaction-also can affect the sinuses. Air trapped within a blocked sinus, along with pus or other secretions, may cause pressure on the sinus wall. The result is the sometimes intense pain of a sinus attack. Similarly, when air is prevented from entering a paranasal sinus by a swollen membrane at the opening, a vacuum can be created that also causes pain. (Source: excerpt from Sinusitis, NIAID Fact Sheet: NIAID)

Summary Information: Sinuses

Sinuses: Several internal cavities behind the face related to nose and oral regions.

Condition count: 3 ; see list below.

Organ types: Face (182)

Organs: list of all organs

Diseases List for Sinuses:

The following list of medical conditions have 'Sinuses' or similar listed as an affected body part in our database:

C

Chronic Sinusitis ... sinus

S

Sinusitis ... sinus

W

Wegener's granulomatosis ... sinuses
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