In: Biology
Ans. Venom of cobra contains neurotoxins (toxins causing advese effect on nervous tissue). When a person is bitten by a cobra, cobra releases venom into the blood stream of the person and venom is spread very fast along the blood stream. This neurotoxin inhibits the interaction of neurotransmitter acetycholine molecules that are released from the endings of nerves which surround the diaphragm muscle with the receptors which are present on diaphragm muscle by binding the neurotoxins with the receptors. When around 80% of the receptor sites are blocked by binding with these toxins, it leads to respiratory failure.