How Come Spiders Don’t Move?
WouterIf you’ve ever been curious about how come spiders don’t move, then you’re not alone. There are many reasons why these creatures spend most of their days in one spot. This gives them a better chance of survival. They also stay in a place that allows them to blend in.
Most spiders are nocturnal hunters. They spend most of their time waiting for prey to be stuck in a web. Some spend their time resting and building a web. In some cases, they may also be hiding from a predator.
In order for spiders to keep moving, they must have a large amount of fluid, called hemolymph, in their skeleton. It moves waste and oxygen, as well as nutrients. When spiders lose hemolymph, they risk becoming ineffective and dying. If they don’t have enough, they cannot generate sufficient pressure to push their legs out.
As a result, spiders have an exoskeleton that is made of several layers of cuticle. Each layer has different proteins that form chains. Chitin, a type of protein, is similar to hair and fingernails, and is used for constructing a strong, light exoskeleton.
Aside from hemolymph, spiders use other fluids to propel their legs. These include a mix of skeletal and hydraulic muscles. They also have hairs on the tips of their legs that allow them to hear their potential prey.
Most spiders don’t have the same muscles that vertebrates have. Their legs are made of spindly legs that flex with muscles. This gives them the ability to quickly subdue their prey.
