National Geographic - Archaeology - Machu Picchu, Peru, American Academy of Otolaryngology - Sinus Surgery, How Stuff Works - Healthguide - Sinus X-ray. Temporal. The roots of the upper-jaw teeth may project through the floor into the sinus cavity or may be so closely related to the floor that extraction leads to the formation of an opening between mouth and sinus (oro-antral fistula). Sphenoidal sinuses are important in the surgical approach to the pituitary gland for patients with breast cancer or pituitary tumours. Give two possible functions of the sinuses. Compare sine. The nucleus pulposus compresses on the spinal cord leading to pain and possible paralysis. Hyoid. Thus composition of gas content in the maxillary sinus is similar to venous blood, with high carbon dioxide and lower oxygen levels compared to breathing air. Ethmoid sinuses: The ethmoid sinuses are located in the ethmoid bone, which separates the nasal cavity from the brain. What bones are connected by the squamous suture? 19. Comprehensive studies on the comparative anatomy and physiology of the nose and paranasal sinuses have been made in humans and in lower animals. This fact explains why nasal respiration can be rapidly impaired or even impeded during weeping: the lacrimal fluid…, The nasal sinuses are frequently the site of both acute and chronic infections. These become blocked easily by allergic inflammation, or by swelling in the nasal lining that occurs with a cold. Spinal nerves exit the vertebral column through the ventral root then the ventral horn. The air sinuses, four on each side, are cavities in the bones that adjoin the nose. These clinical problems can include secondary sinusitis, the inflammation of the sinuses from another source such as an infection of the adjacent teeth.[5]. 3D cast of maxillary, frontal, ethmoid and sphenoid sinuses, nasal cavity and hypopharynx. The most common disorder affecting the paranasal sinuses is infection, a condition that is known as sinusitis (q.v.). (Some choices may be used more than once.) The duct drains the lacrimal fluid into the nasal cavity. Foramen magnum located here. SOCI
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