Spider spinneret, coloured scanning electron micrograph (SEM). This structure, one of several, is found on the tip of a spider's abdomen. It produces

---

Spider spinneret, coloured scanning electron micrograph (SEM). This structure, one of several, is found on the tip of a spider's abdomen. It produces the silk which spiders use for a wide variety of purposes, such as safety lines, webs, and shelters. Some spiders also use silk to spin cocoons for their eggs. Spider's silk is made of a protein polymer called fibroin. It is very elastic and can be stretched 30-40 percent of its length before it breaks.

---

Size: 4680px × 3744px
Photo credit: © CLOUDS HILL IMAGING LTD/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 1, abdomen, abdomen., abdominal, anatomy, animal, arachnology, biological, biology, close-, colored, coloured, detail, entomological, entomology, extrude, fauna, fibroin, insect, lines, nature, production, safety, sem, shelters., silk, single, spider, spinneret, spinnerets, strands, traps, web, wildlife, zoological, zoology