Do spiders have high blood pressure?

Factual Questions
1

I remember reading a long, long time ago that spiders have high blood pressure, and any puncture may kill them. Is this true?

2

High blood pressure relative to what?

3

“High blood pressure” doesn’t mean that you have more blood than your arteries should contain, and any little puncture will make you basically explode. It’d be funny, though, if that were true.

4

They have an open circulatory system, so I’m guessing the lose a significant amount of blood from almost any kind of hole in their exoskeleton.

5

Definitely not true for any species that relies on traumatic insemination to reproduce.

6

This sounds more like what I (mis-)remember.

Thanks.

7

Does that mean they have torture phalli?

(Via.)

Also, phalloblaster.

8

My experience is that spiders are hard to puncture. They seem to squish and recover, albeit temporarily, and move on if not really flattened.

9

Vets who treat pet spiders take blood samples (more accurately, haemolymph samples) and give fluids via cardiac needle puncture.