导图社区 5sensestaste
1. nasal cavity and mouth are connected、2. we often taste and smell the same particles、If you cover your nose, you won't be able to taste well。
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Our five senses
Taste
Use what organ to taste?
tongue
what part of tongue
Taste buds
Our tongue is covered in millions of taste buds
What looks like?
Taste buds looks like many tiny bumps on our tongue
How?
When we eat, taste buds tell us what flavor it is
What to taste?
5 main flavors
Sweet
taste area
tip of tongue
Bitter
back of tongue
Salt
Sour(酸)
Umami（鲜味）/Savory
概要
Why?(purpose)
Avoid poison(dangerrous) food
toxic substance can harm our body
generally taste bad
e.g rotten food
food that has gone bad
Seek high energy foods
Benefits: help our body too work
Bad points: eating too much is bad
generally taste good
Smell
Use what organ to smell
nose
what part of nose?
nasal cavity
What to smell?
ONLY particles(微粒) in the air
How to smell?
1. small particles emit from source
2. they enter the nasal cavity
3. nerves in nasal cavity detect them and tell our brain
same as purpose of taste
Animals with much better sense of smell
Why?
Use the sense of smell to hunt
Need to smell food from far away
Example: wolf
Example:dog
40 times of ours
why?
Dog has more cells(细胞) in nasal cavity
Its structure of nose is also better designed to smell
How we use their sense?
Train to help us find people based on smell
Smell and taste work together
1. nasal cavity and mouth are connected
2. we often taste and smell the same particles
Example 1
If you cover your nose, you won't be able to taste well
Example 2
When our nose is blocked, we can't taste well
