Why Do Spiders Curl Up When They Die
Olivia Luz
When there is no longer blood pumping through the spider s body it is almost like hydraulics shutting off.
Another awesome fact about spiders is that they don t bleed. The simple answer is their is no more hydraulic pressure to extend the legs and the flexor muscles revert back to their original length with no resistance thus the legs curl in. Because of this fancy little hydraulic system spiders curl up into tight small balls when their bodies give out. Simply put the system fails because there is no more hydraulic pressure keeping the flexor muscles relaxed.
Ok smarty pants why do they curl up when they die. Lying on their back legs sticking up in the air. Spiders may tuck in their legs when they are chilly but they do not really curl up in the traditional sense. When they die there is no more hydraulic pressure to extend their legs.
The flexor muscles revert back to their original length and this is why the spider legs curl up. This tell tale position is actually a symptom of an ailing bug s decreased coordination and failing. Why do spiders curl up. In fact a spider that has curled up is most likely dead.
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Dead or dying insects assume a familiar pose. This causes these strong flexor muscles to constrict and retract creating this ball shape. So why do they curl up and die. So when a spider dies its limbs essentially lose pressure and all sort of wind back up.
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