The venom secreted by the poison gland can pass through Sting (such as poisonous worker bees) Prickly hair (e.g Prickly moth Larvae) Sting (e.g spider ）、 Caudal spur (e.g. scorpion), fangs (e.g viper ）Inject into other animals or people, causing poisoning. Due to different animals, the position and structure of the venom glands are also different. For example, the venom glands of worker bees are located in the abdomen and are composed of tubular Acid gland and Alkaline gland Two parts; The venomous glands of venomous snakes are located above the mouth corners on both sides of the head, and their size and shape vary from species to species. Tough white outside connective tissue The back end is blunt and round, and the front end forms a slender duct to connect with the base of the fangs. 
poison gland The venom secreted by the venom gland can flow into the base of the fangs through the catheter, and then from the Poison ditch or Poison tube Inject into other animals or human bodies. The venom secreted by the venom gland of a poisonous snake is the most toxic among the venoms. It must be rescued in time after being bitten.
venom (2) The venom gland of the lizard is the sublingual gland, and its secretion opens in the groove teeth in front of the mandible;
(3) Amphibians, fishes, and some skin glands are poison glands, Toad One of them is the ear gland of P. anguillaris, and the venomous glands of P. anguillaris and Hypodytes rubripinnis at the base of dorsal fin strips and red at the base of dorsal midline spines; (4) Membranoptera insects such as bees, most of which are in the abdominal toxic glands and open on the needles;
centipede (6) The long spines of the echinococcus spinosa of sea urchins are secondary hollow inside, and the mesodermal tissues become poison glands. The trumpet sea urchin has a special poison spines (poisonous pedi cellaria) called forked spines, and its end expands into a trumpet shape, with three pairs of poison glands, claws, and muscles squeezed by gland secretions;
(7) The cocktails of the arrowtongue family Coreoptera have poison glands on the tooth tongue, which secrete deadly toxic substances;
(8) In addition, scorpions have venomous glands in their caudal joints and spiders in their upper jaw. [1]
