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CalculusCrazed

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Why does the right lymphatic duct drain only 1/3 of the body? Is there a logical explanation, or is it just because that's the way it is?

Thanks,
CC
 
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In science 'why' is never the relevant question, since it presupposes some sort of intelligent design (which inevitably elicits a flame war) thus we scientists stick to the other 4 w's. 🙂
The "why" can be answered quite easily by saying that it was somehow advantageous to our ancestors; thus, it has been selected for.
 
In science 'why' is never the relevant question, since it presupposes some sort of intelligent design (which inevitably elicits a flame war) thus we scientists stick to the other 4 w's. 🙂

"Why" is fine, if by "why" one means "are there any advantages to this arrangement."

As an engineer, I always ask "why."
 
The "why" can be answered quite easily by saying that it was advantageous to our ancestors; thus, it has been selected for.

Perhaps. One might argue, though, that the millions of other organisms that populate the Earth have vastly differing vascular setups (if any) and prosper in spite of that, so it might not be critical to survival / reproductive capacity.

(Sorry to :hijacked:, OP)
 
In science 'why' is never the relevant question, since it presupposes some sort of intelligent design (which inevitably elicits a flame war) thus we scientists stick to the other 4 w's. 🙂

I would also point out that "why" drives a lot of advancement in science, cf. wondering why things fall (gravity).
 
Lol.... Why is this configuration of the human body advantageous?

It's odd to me that this would occur. Logic tells me that since the body is relatively symmetric, that it should be half and half.

There really is no hidden meaning behind it, I am just wondering.
 
Lol.... Why is this configuration of the human body advantageous?

It's odd to me that this would occur. Logic tells me that since the body is relatively symmetric, that it should be half and half.

There really is no hidden meaning behind it, I am just wondering.
Just a wild guess here, but it could have something to do with humans having fewer lymph nodes/organs on the left side of the body.
 
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Perhaps. One might argue, though, that the millions of other organisms that populate the Earth have vastly differing vascular setups (if any) and prosper in spite of that, so it might not be critical to survival / reproductive capacity.

(Sorry to :hijacked:, OP)
I'd assume a lymphatic system in a complex organism would be critical to survival.
 
Just a wild guess here, but it could have something to do with humans having fewer lymph nodes/organs on the left side of the body.

I can't find any literature that states this, but from looking at the picture in my anatomy book, the left and right sides look relatively equal in number of lymph nodes.
 
If you think that the body is relatively symmetric

prepared to be annoyed by thorax and abdomen.
 
embryology. gotta drain the gut, and you only do it with what ends up as the left side. problem is you still have the right upper extremity to drain.. as far as a grand scheme answer, who knows. i bet if you look at a lot of species its like this though (of course im speculating) ... not just a survival advantage for humans
 
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