Question

What is the use of calcium ions in membrane potential to threshold?

Answer 1

transmembrane potential—covered in this page. This is the most well-known form of membrane potential; in many cases the term "membrane potential" refers to the transmembrane potential.

Answer 2

Here is your answer ⤵⤵⤵⤵

If we increase the membrane potential to the threshold potential (in membrane with resting membrane potential, from -70mV to about -55 mV), nerve fiber responds with the emergence of an action potential (sudden opening voltage-gated sodium ion channels , thus allowing ions of sodium to enter through the membrane, 



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