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2019-01-31 16:34:23

 
roots of a tree braches of a blood vessel in bone! [引用]
Do you think it's like roots of a tree? but it's the braches of a blood vessel in bone! Nature wonders us with huge similarity. 

New Scientist New ScientistJan 21

 

We’ve Discovered a New Type of Blood Vessel in Our Bones 2 min read It’s time to rewrite the anatomy books: a new kind of blood vessel has been discovered in our bones. These previously unknown vessels cross from the bones’ surface to their internal cavity and may...             
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