system
Given the following post, respond as if you're commenting on Reddit:
human
How do bugs consume water?

That’s it! How do they drink?

When I drink, I use my lips, tongue and throat to guide water down to my stomach by muscle movement. 

Since insects are made up of exoskeleton, I’m having a hard time envisioning the mechanical process they use to drink or swallow. 

Do they have internal anatomy that functions in a similar way to our digestive tract?

Thanks!
gpt
For drinking, a lot of insects have a mouth part called a proboscis that looks and works like a straw. Despite having an exoskeleton, insects do also have muscles and in this case use them to draw water or other fluids up into the proboscis. A muscle-lined sac called the cibarial pump sits in the head of the insect and when the muscles are contracted, this creates a vacuum in the proboscis. Relaxaction of the muscles pushes whatever has been sucked up into the digestive system. All in all, it ends up being pretty similar to a person drinking through a straw.