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Lecture 11

BIOB32H3 Lecture Notes - Lecture 11: Mammalian Diving Reflex, Mechanoreceptor, Sodium Cyclamate


Department
Biological Sciences
Course Code
BIOB32H3
Professor
jason brown
Lecture
11

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BIOB32 – Animal Physiology Laboratory
Ta s t e
Yarmolinsky et al. (2009) Cell 139: 234
Chandrashekar et al. (2006) Nature 444: 288
lab on mechanoreceptors: 2 parts
1st part: mechanoreceptors in insects: crickets
2nd half: mammalian diving reflex: burry ur face in water and see the effects on ur heart rate
theme of this lecture: sensory receptors (unlike lab that’s about mechanoreceptors)

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Ta s t e
Why Can Mammals Taste?
Ta s t e d i d n t e v o l v e f o r c o n n o i s s e u r s h i p
we study taste in mammals bc that’s where most of our info comes from
why can mammals taste? how did taste evolve?
taste didn’t evolve for connoisseurship although it is pleasurable

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Ta s t e
Why Can Mammals Taste?
Ta s t e d i d n t e v o l v e f o r c o n n o i s s e u r s h i p
…but rather for acceptance vs. rejection!
“Pleasure vs. Poison”
taste was evolved to inform us if we should reject a food in env when we put it in our mouth or keep eating it based on its taste (to distinguish between good/bad
compounds in env)
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