Arches

... of human. http://www.sciencedaily.com:80/releases/2009/05/090506144307.htm Hobbits had 'flat feet', unlike humans who have arched feet. Our arches are an adaptation to long distance running, meaning that hobbits were not good runners. It appears that hobbits evolved from Homo habilis or ...

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the aortic arches carry blood from the dorsal blood vessel to the ventral blood vessel (I found it in wikipedia & I believe this is correct) But I thought these are worms' hearts & I wasn't wrong! I found this in a website ...

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Ok, I'm new here and I currently take bio 10 at my school. We're studing worms. This isn't a homework question, I just have to understand Aortic Arches and what they are, but I can't find anything on the internet or in my text book at all. I found something on frogs but I don't know if it differs ...

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It's most likely giving a secondary push as it rebounds (that's definitely what happens in aortic arches, so it makes sense in regular arteries).

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... because of their huge mass. The more dense a body is - the less heat escapes. I was trying to think of any extant species that have large neural arches the other day. I couldn't come up with anything other than sailfish & I have no idea what they use theirs for.

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