How to select a lot of faces efficiently?


I want to select faces for pressure to be applied on. The problem I'm facing though is that I'm not sure if there's a faster way to select all preferred faces than having to Ctrl-click all of them. I know about the box-/lasso-select options, but these don't seem to work for my geometry 😅. Please look at the images below:

So I want to select only the faces INSIDE of the artery, but I really wouldn't know how to do that without either having accidentally selected other faces as well (which would mess up the simulation) or selecting the faces one by one using Ctrl-click and hoping not to mess up in the meanwhile (which costs A LOT of time and RSI peeking around the corner).

Suggestions would be appreciated \(^w^)\.

Kind regards,



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