Question

help this questions underline blue colour

Answer 1

I think reflex action

Answer 2

hii as we know about the reflex action but some of us is familiar to the accitilecholine which is present in the nerve ending of a neuron this helps to transport is electrical message throughout the gap between the two neuron called synpase the accitilecholine is inactive in nueron but when the electrical. message is pass through the nueron than the wall of nurone secret the calcium ion. which react with accitilecholine and help in to become active so from the above conclusion we can say that the charge help in immediate response is calcium 2+
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