2015-04-27

[public] 1.68M views, 27.0K likes, 380 dislikes audio only

CrashCourse

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 translate 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.

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Chapters:

Introduction: Anosmia 00:00

How Smell Works 2:13

Olfactory Epithelium 2:47

Olfactory Sensory Neurons 3:19

Glomerulus 3:47

How the Brain Processes Smell 4:48

How Taste Works 6:19

What Are Taste Buds (Taste Receptor Epithelial Cells)? 6:40

Types of Taste Receptor Epithelial Cells: Gustatory and Basal 7:53

How Different Tastants are Sensed 8:37

Review 9:28

Credits 10:05

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