This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
PSM Spider mandible. HouseSpider Tegenaria domestica Termination of the Jaw or Mandible Row of Teeth on the Claw Basal Joint of Mandible showing the Five Large Teeth Commencement of Poisonsac Course of the Poisonduct The last two are only visible when the mandible has been carefully bleached with chlorine archive org Popular Science