Spleen blood supply

[OphthLover]

It's stated in FirstAid that "Spleen arises in mesentery of stomach (hence is mesodermal) but is supplied by foregut (celiac artery)." I am thoroughly confused as to why it would use the conjunction "but." Is it suggesting that mesodermal structures would normally be supplied by blood supplies other than celiac artery? If so, what would be such blood supplies? I'd greatly appreciate any help.

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[scoKraz4]

It is just an exception to the rest, hence the but.

 

[gk12321]

it is the only one of mesodermal origin supplied by the celiac A, read on page 346 about the other structures supplied by the celiac.

Hence the "but".

 

[worldbeater]

There is a UWorld (#2022 if you can look it up) that this is the answer for, that's why that line is worded in a weird way.

It talks about a soccer player who had some on field trauma, and then says "his injury involves an organ that is supplied mainly by an artery of the foregut, even though the organ itself is not a foregut derivative". That organ is the spleen -> and then they will put a CT scan and you pick the letter that corresponds to the spleen.