PCB4843 Week 9 - Questions with Correct Answers
(Verified Update)
43 questions with answers
Topic: PCB4843 Week 9
1. what are the chemical senses
Answer: taste and smell
2. chemical senses involve a special type of receptor called
Answer: chemoreceptors
3. the thresholds for basic tastes are
Answer: all at different concentrationsbitter has a very low threshold (high sensitivity) while
sugar has the highest threshold (low sensitivity)
4. retronasal olfaction
Answer: the detection of an odorant when it is in the mouth
5. orthonasal olfaction
Answer: the detection of an odorant when it is outside the mouth
6. papillae
Answer: protuberances on the tongue surface containing taste buds
7. papillae vs taste buds vs taste cells
Answer: each papilla has 1-100 taste buds
8. at concentrations of tastants just above threshold...
Answer: papillae are relatively selective to just one tastant
9. at higher concentrations of tastants...
Answer: papillae can respond to multiple different concentrations of tastants
10. which tastants can and can't be detected together
Answer: sweet, bitter, and umami cannot be detected together
11. microvilli and taste
Answer: taste cells contain microvilli that project into the taste pore
12. taste cells form synapses on ___
Answer: gustatory nerve afferents
13. how often are taste cells regenerated
Answer: every two weeks
14. NT for sour and salt
Answer: serotonin
15. NT for sweet, bitter, and umami
Answer: ATP
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(Verified Update)
43 questions with answers
Topic: PCB4843 Week 9
1. what are the chemical senses
Answer: taste and smell
2. chemical senses involve a special type of receptor called
Answer: chemoreceptors
3. the thresholds for basic tastes are
Answer: all at different concentrationsbitter has a very low threshold (high sensitivity) while
sugar has the highest threshold (low sensitivity)
4. retronasal olfaction
Answer: the detection of an odorant when it is in the mouth
5. orthonasal olfaction
Answer: the detection of an odorant when it is outside the mouth
6. papillae
Answer: protuberances on the tongue surface containing taste buds
7. papillae vs taste buds vs taste cells
Answer: each papilla has 1-100 taste buds
8. at concentrations of tastants just above threshold...
Answer: papillae are relatively selective to just one tastant
9. at higher concentrations of tastants...
Answer: papillae can respond to multiple different concentrations of tastants
10. which tastants can and can't be detected together
Answer: sweet, bitter, and umami cannot be detected together
11. microvilli and taste
Answer: taste cells contain microvilli that project into the taste pore
12. taste cells form synapses on ___
Answer: gustatory nerve afferents
13. how often are taste cells regenerated
Answer: every two weeks
14. NT for sour and salt
Answer: serotonin
15. NT for sweet, bitter, and umami
Answer: ATP
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