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Predict what effect each of these venoms would have had on the muscle contractions of the...

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Medical Sciences

Predict what effect each of these venoms would have had on themuscle contractions of the biventer cervicis muscle. Remember tojustify your answer

Venoms and Reactions -

1.      Redback spider(Latrodectus hasseltii) – contains a toxin which formspores in the cell membrane of neurons, allowing the influx ofCa2+ into the nerve terminal

2.      Blue-ringed octopus(Hapalochlaena lunulata) – contains a toxin which blocksvoltage-gated Na+ channels

3.      Funnel-web spider(Atrax robustus) - contains a toxin which causes delayedinactivation of voltage-gated Na+ channels

4.      Tiger snake (Notechisscutatus) – contains a toxin which prevents ACh binding tonAChRs on muscle fibres

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Answer Effect of venoms on muscle contractions of the biventer cervicis muscle 1Redback spider Latrodectus hasseltii contains a toxin which forms pores in the cell membrane of neurons allowing the influx of Ca2 into the nerve terminal Its venom is alphalatrotoxin neurotoxic venom which results in the exocytosis of synaptic vesicles from parasympathetic terminals due to the    See Answer
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