mass nountechnical. 1The flowing out of a substance or particle. âthe same active efflux of sodium from the cytoplasm to the external mediumâ. âThe scary aspect of this is that calcium ion efflux occurs at intensities and field strengths that are extremely low.â. âLater, the efflux of solutes from chloroplasts was measured.â.
Head and neck cancer includes cancers of the mouth, nose, sinuses, salivary glands, throat, and lymph nodes in the neck. Most begin in the moist tissues that line the mouth, nose and throat. Using tobacco or alcohol increases your risk. In fact, 85 percent of head and neck cancers are linked to tobacco use, including smoking and smokeless tobacco.
Below are some general symptoms and warning signs of head and neck cancer. 1  Each type of head and neck cancer may be associated with a more specific group of symptoms. Many of these symptoms can also be caused by other health conditions. See your doctor if you notice: 2  a lump or swelling in the neck.