Question

After cobra bite, venom affects the
A. Brain
B. Blood circulation
C. Lungs
D. None of the above

Answer 1

Hint: Venom is an animal’s secretion which contains certain kinds of toxins that are dangerous to human health. Mainly spiders, scorpions and snakes are venomous.

Complete answer:
Venom secreted by an animal is mostly dangerous but sometimes it has various useful substances that can be helpful. Spiders usually secrete their venom by biting,they have fang -like teeth. scorpions have sting that secretes venom. Many insects like bees and wasps are also venomous, they use it as a defense mechanism.
Venom contains several types of toxins, necrotoxins, mycotoxins, neurotoxins and cytotoxins. Each toxin has a different effect on the human body.
In case of a cobra bite, neurotoxins are secreted along with the venom in the body. Snakes usually bite sometimes they spit on their prey. Neurotoxins affect the nerves and nervous system. This toxin kills or paralyzes the prey. It affects both the central nervous system and peripheral nervous system. It causes euphoria, drowsiness and drooping of the eyelids. It makes the person weak, since it affects the CNS, the nerve impulse gets slow, the muscle fiber does not receive stimulation, vision becomes poor. The toxin prevents the interaction of acetylcholine molecules with diaphragm which causes the paralysis of diaphragm.

Hence, the correct answer is option (A)

Note: The treatment of venom is the antivenom. It should be injected quickly to the patient within thirty minutes or the person may die.