sinus cavities diagram

August 03, 2026

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A sinus is a sac or cavity in any organ or tissue, or an abnormal cavity or passage. In common usage, "sinus" usually refers to the paranasal sinuses, which are air cavities in the cranial bones, especially those near the nose and connecting to it. Most individuals have four paired cavities located in the cranial bone or skull. Sinus pain and discomfort typically starts when your sinuses become irritated and inflamed, causing swelling that can narrow or close off the openings. This makes it hard for mucus to drain out of your sinus cavities. Mucus and air pressure build, causing a feeling of stuffiness and congestion. Sinusitis can cause facial pain, swelling and congestion. Learn the causes and how to treat it. Learn what sinuses are, their causes, symptoms, and treatment options. Expert ENT doctors at Magrabi Hospitals explain how to breathe freely again. Sinus infections, or sinusitis, occur when a virus of bacteria enters the sinuses. Read on for a list of common symptoms and treatments. For related background details, please refer to our report on 2010 chevy malibu engine diagram. Sinusitis, also known as rhinosinusitis and commonly known as a sinus infection, is an inflammation of the mucous membranes that line the sinuses resulting in symptoms that may include production of thick nasal mucus, nasal congestion, facial congestion, facial pain, facial pressure, loss of smell, or fever. [6][2] Sinusitis is a condition that affects both children and adults. It is caused by ... Find out about sinusitis (sinus pain), including the symptoms and treatments and when to get medical help. Der Sinus ist also eine ungerade Funktion, der Kosinus eine gerade. Sinus und Kosinus sind periodische Funktionen mit der Periode 360 Grad. (Man kann einen Winkel von beispielsweise 365° nicht von einem Winkel von 5° unterscheiden.