Predict what effect each of these venoms would have had on the
muscle contractions of the biventer cervicis muscle. Remember to
justify your answer
Venoms and Reactions -
1. Redback spider
(Latrodectus hasseltii) – contains a toxin which forms
pores in the cell membrane of neurons, allowing the influx of
Ca2+ into the nerve terminal
2. Blue-ringed octopus
(Hapalochlaena lunulata) – contains a toxin which blocks
voltage-gated Na+ channels
3. Funnel-web spider
(Atrax robustus) - contains a toxin which causes delayed
inactivation of...