Such is the strength of the design of the spider web that it has been adapted in to much of our own architecture. Sometimes the spiders seem to get their ideas from us, but that really isn’t the case! The thread that spiders produce come from glands called spinnerets. There are, so far, seven different types of spinnerets that have been identified and each one has a separate purpose. Each type of spider will possess a few of these spinneret glands, but there has never been a recorded case of a spider having all seven types!