The fluids travel through flexible plastic/rubber 'tubing'.
We 'go tubing' on the river every summer.
(..) Well, it looks like you got it right. This is what we're using to replace the damaged plasma conduit. Yes, but you need to reinforce the tubing with a nano-polymer. Dr Cochrane, I know this sounds silly, but can I shake your hand? It's such an honour to work with you. I'm sorry... Thanks. (..)1996 Star Trek: First Contact