Snake-venom

 Snake venom may be an extremely changed secretion containing zootoxins that facilitate the immobilization and digestion of prey, and defense against threats. it's injected by distinctive fangs throughout a bite, and a few species are able to spit their venom.     The glands that secrete the zootoxins square measure a modification of the salivary gland secretion glands found in different vertebrates, and square measure sometimes placed on either side of the top, below and behind the attention, and encapsulated during a muscular sheath. The glands have giant alveoli that|during which|within which} the synthesized venom is hold on before being sent by a duct to the bottom of channeled or hollow fangs through which it's ejected.   Venoms contain over twenty completely different compounds, principally proteins and polypeptides. a posh mixture of proteins, enzymes, and numerous different substances with harmful and fatal properties serves to immobilize the prey animal, enzymes play a very important role within the digestion of prey, and numerous different substances square measure answerable for necessary however non-lethal biological effects. An number of the proteins in venom have terribly specific effects on numerous biological functions as well as clotting, pressure regulation, and transmission of the nervous or muscular impulses, and are developed to be used as medicine or diagnostic tools, and even helpful medication.