00:01
Hello friends in this question role of sodium, potassium and calcium ions we are going to discuss and their particular role in action potential and if these ions are absent in case of generation of impulse what will happen? now first sodium potassium here these two acts like the parts of sodium potassium potassium atipase pump, sodium, potassium atipase pump and these sodium and potassium act as transporter, act as a transport.
00:59
Sodium and potassium ion, these are actually protein structure and these help in transport of sodium and potassium.
01:12
Sodium and potassium ions across the cell membrane.
01:18
Sodium and potassium ion across cell membrane.
01:38
And when we talk about their passage, the ratio of three sodium ions out for every two potassium ions brought in.
01:51
Three sodium out and two potassium ions in this will be the ratio and thus it helps to stabilize membrane potential helps to stabilize membrane potential and next it is essential in creating the condition and necessary for firing of action potential this condition necessary for firing of action potential now next we are talking about next we are talking about calcium ion when the action potential reaches the terminal it activates voltage dependent calcium channel now next role is of calcium and when the action potential reaches it reaches to terminal it activates voltage dependent calcium channel calcium channel and allowing calcium ion to flow into and allowing calcium ions to flow into terminal.
04:11
And that's why calcium channels, these are important to generate neurotransmission...