Bill Nye The Science Guy 5 9 -1 -1 251088 0.0 0.0 0 How do noses work? Objects give off tiny amounts of tiny molecules into the air. When just a few of these molecules get up your nose, they dissolve in the mucus up there. Some molecules come into contact with special receptors on what’s called your “olfactory membranes.” Each nostril has a membrane, and each membrane is only about the size of a postage stamp. The membranes hold millions of receptor cells, each of which are ready to send messages to the brain about the molecules that go up your nose. 26 http://image.tmdb.org/t/p/original/jBZn17Ai8K2uqu42qmo7G3wWVBP.jpg 1997-12-05 1997-12-05 false Rabbit Ears Productions Public Broadcasting Service KCTS Television Bill Nye Michael Gross Kit Boss Erren Gottlieb Ian G. Saunders Adam Gross Seth Gross Simon Griffith Scott Schaefer Darrel Suto Michael Palleschi Lynn Brunelle James McKenna 2020-08-23 13:00:58 UNKNOWN BNTSG S05E09 Ocean Exploration.avi