Viper bite a) Musculo-toxic b) Neuro-toxic c) Histotoxic d) Vasculotoxic Answer: Vasculotoxic Explanation: 1. Neurotoxins: Alfa-neurotoxins are a large group of postsynaptic toxins. Alfa -neurotoxins also attack cholinergic neurons. They mimic the shape of the acetylcholine molecule and therefore fit into the receptors → they block the ACh flow → feeling of numbness and paralysis. Snake examples: king cobra, sea snakes, many-banded krait and cobras 2. Cardiotoxins are components that are specifically toxic to the heart. They bind to particular sites on the surface of muscle cells and cause depolarization and prevent muscle contraction. These toxins may cause the heart to beat irregularly or stop beating, causing death. Snake example: mambas, and some cobra species 3. Hemotoxins cause hemolysis, the destruction of red blood cells (erythrocytes), or induce blood coagulation (clotting). Snake example: most vipers and many cobra species.