Taste&Smell: Crash Course A&P #16

Hank resists the urge to devour a slice of pizza so that he can walk you through the way we experience our major special senses. It all boils down to one thing: sensory cells translating chemical, electromagnetic, and mechanical stimuli into action potentials that our nervous system can make sense of. Today we're focusing on smell (olfaction) and taste (gustation), which are chemical senses that call on chemoreceptors. As usual, we'll begin with a quick look at how these things can go wrong.

Table of Contents
Anatomy and Physiology of Smell 2:26
The Olfactory Sensory Neurons 3:01
Receptors→ Glomerulus → Mitral Cells → Brain 3:47
Taste Receptor Epithelial Cells 7:30
Receptors Trigger Action Potentials to Four Different Cranial Nerves 8:26


***

Crash Course is now on Patreon! You can support us directly (and have your contributions matched by Patreon through April 30th!) by signing up at http://www.patreon.com/crashcourse

Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:

Mark Brouwer, Simun Niclasen, Brad Wardell, Roger C. Rocha, Jan Schmid, Elliot Beter, Nevin Spoljaric, Sandra Aft, SR Foxley, Jessica Simmons, Stefan R. Finnerup, Jason A Saslow, Robert Kunz, Jessica Wode, Mike Drew, Steve Marshall, Anna-Ester Volozh, Christian Ludvigsen, Jeffrey Thompson, James Craver

***SUBBABLE MESSAGES***

TO: Rachel
FROM: Alex

I Love You!

--

TO: Crash Course
FROM: James Earle

I loved Subbable.I'll see you on Patreon.

***SUPPORTER THANK YOU!***

Thank you so much to all of our awesome supporters for their contributions to help make Crash Course possible and freely available for everyone forever:

Suzanne, Dustin&Owen Mets
Amy Fuller
Simon Francis Max Bild-Enkin
Ines Krueger
King of Conquerors Gareth Mok
Chris Ronderos, Dallas, TX
Gabriella Mayer
jeicorsair
Tokyo Coquette Boutique
Konradical the nonradical

--

Want to find Crash Course elsewhere on the internet?
Facebook - http://www.facebook.com/YouTubeCrashCourse
Twitter - http://www.twitter.com/TheCrashCourse
Tumblr - http://thecrashcourse.tumblr.com
Support Crash Course on Patreon: http://patreon.com/crashcourse

CC Kids: http://www.youtube.com/crashcoursekids