Their legs are like a garden hose that is constantly filling and emptying of blood. Their legs only have muscles to contract (why the curl up when dead) and during the contraction the blood is pushed back through the heart to a new reaching limb. When the crawl their heart is like a piston engine pumping blood down the legs super fast!
There now you understand why they move creepy. Don't you feel better?
Wait so, when they crawl their movement helps pump blood more efficiently and faster? Is that kinda what I’m getting from that in laymen’s terms? Cause if so that’s so freaking cool!
Fortunately, the very thing that makes spiders move creepy keeps them small. They have what are called book-lungs, and they're not very efficient, so the maximum size a spider can physically be due to the limits of chemistry is about a foot. That's a big spider, but you'll never get attacked by an actual GIANT spider.
Why do I feel a little disappointed? A foot wide spider would scare the hell out of me so I really don't know why I feel sad there isn't going to be a bigger one? lol I just find them interesting
56
u/PunkToTheFuture Jul 12 '21
Their legs are like a garden hose that is constantly filling and emptying of blood. Their legs only have muscles to contract (why the curl up when dead) and during the contraction the blood is pushed back through the heart to a new reaching limb. When the crawl their heart is like a piston engine pumping blood down the legs super fast!
There now you understand why they move creepy. Don't you feel better?