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Bill Nye the Science Guychevron_right
S05E11: SmellHow 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.
Genres:
Air Date:
Feb 28, 1998
Runtime:
26 minutes
Production:
Casts:
Bill Nye, Rachel Glenn, Jennifer Lin, Amy Broder, Ethan Ferkiss
