The sinuses are formed in four right-left pairs. Define sinus. sinus synonyms, sinus pronunciation, sinus translation, English dictionary definition of sinus. The sinoatrial (or sinus) node is the natural pacemaker of the heart. Sinus: 1. A depression or cavity formed by a bending or curving. Also learn about conditions, tests, and treatments affecting the sinuses. Sinus cavities produce the mucus that nasal passages need to work effectively. Medical Author: William C. Shiel Jr., MD, FACP, FACR; Tachycardia, sinus: A fast heartbeat (tachycardia) because of rapid firing of the sinoatrial (sinus) node. Medical Definition of Tachycardia, sinus. Sinusitis is a common condition defined as inflammation of the paranasal sinuses. Read medical definition of Sinus. WebMD's Sinuses Anatomy Page provides a detailed image and definition of the sinuses including their function and location. An air-filled cavity in a dense portion of a skull bone.The sinuses decrease the weight of the skull. sinus n. 1.

How To Cut Your Own Hair Long, 2020 Honda Civic Hatchback Price, Oxford Vs Derby, Lady Monk Dynasty, Toyota Sienna Hybrid 2021 Price, Philips Diamond Vision Lifespan, Self Tapping Screws Home Depot, Cliff Racer Fly So High,