Sushi is a highly prized delicacy prepared from the flesh of Japanese puffer fish.
But recently it is found to pose health risk to humans because.

tetrodotoxin (TTX) in its gonads block Na⁺ channels on axons

$α$ - bungarotoxin from the fish block acetylcholine receptors

toxins in its body block different types of voltage gated by Ca²⁺ channels

None of the above

Solution

tetrodotoxin (TTX) in its gonads block Na⁺ channels on axons

The gonads of puffer fish has tetradotoxin (TTX) in its gonads. This neurotransmitter blocks Na⁺ channels on axons and prevents the transmission of action potential. So, ingestion of only a tiny amount can be fatal.

Some More Questions From Human Health and Disease Chapter

Out of four species of malaria which is most serious ?

Name the vector of malaria.

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Human Health And Disease

Some More Questions From Human Health and Disease Chapter

Out of four species of malaria which is most serious ?

Name the vector of malaria.

Write the causative agent of (i) amoebiasis and (ii) ascariasis.

Name the disease caused by Wuchereria bancrofti.

List three fungal genera which cause ringworm.

List two symptoms of ring worm.

Name the two wide spread diseases caused by Aedes mosquitoes.

Name the primary lymphoid organs.

What is the protein produced by B-cells called?

Which type of immune response does T-cells mediate?

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