Es of the paranasal sinuses and nasal cavity. Paranasal sinuses "paranasal" means near the nose. The paranasal sinuses are hollow, air-filled spaces in the bones around the nose. The sinuses are lined with cells that make mucus, which keeps the inside of the nose from drying out during breathing. Enlarge anatomy of the paranasal sinuses (spaces between the bones around the nose). viagra overnight There are several paranasal sinuses named after the bones that surround them: the frontal sinuses are in the lower forehead above the nose. viagra used treat bph The maxillary sinuses are in the cheekbones on either side of the nose. The ethmoid sinuses are beside the upper nose, between the eyes. The sphenoid sinuses are behind the nose, in the center of the skull. Nasal cavity the nose opens into the nasal cavity, which is divided into two nasal passages. order viagra overnight Air moves through these passages during breathing. buying viagra online The nasal cavity lies above the bone that forms the roof of the mouth and curves down at the back to join the throat. The area just inside the nostrils is called the nasal vestibule. can buy viagra jakarta A small area of special cells in the roof of each nasal passage sends signals to the brain to give the sense of smell. Together the paranasal sinuses and the nasal cavity filter and warm the air, and make it moist before it goes into the lungs. The movement of air through the sinuses and other parts of the respiratory system help make sounds for talking. Paranasal sinus and nasal cavity cancer is a type of head and neck cancer. buy mexican viagra online Different types of cells in the paranasal sinus and nasal cavity may become malignant. The most common type of paranasal sinus and nasal cavity cancer is squamous cell carcinoma. This type of cancer forms in the squamous cells (thin, flat cells) lining the inside of the paranasal sinuses and the nasal cavity. Other types of paranasal sinus and nasal cavity cancer include the following: melanoma: cancer that starts in cells called melanocytes, the cells that give skin its natural color. generic viagra in usa Sarcoma: cancer that starts in muscle or connective tissue. viagra cheap buy canada Inverting papilloma: benign tumors that form inside the nose. discount viagra online A sm.
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