There are many parts to the nerve. The major part is neuron #2: the gate is closed and N.T. binds with receptor creating a shape change (CRC) opening the gate. Positive ions move through (influx) of Na+. This is not a garantee to reach Action Potntial getting to -55 mr. If it does reach -55 mr in the Axon Hillick VRC is activated changing the shape yet again and channels open all at once. -55 mr then becomes -30 mr (peak of Na+) Action Potential. The going to Repolorization: shape change to K+ Efflux and flow slows and moves back out going to Hyperpolorization for a brief second goes past -70 mr and goes back to the resting state.
This seems very complicated but is really not. It's something that we go through everyday when we want to make a movement. These neurons stimulate other parts to move going from resting (not movig) to movement. I am a CNA and if I did not have the capability to do these things then I would be like many of my patients unable to move because neurons have been destroyed. Some f my patients have this problem because of too many drugs or an injury. This process is a part of every body.
Christine,
ReplyDeleteI find the whole nerves thing highly confusing but also just as interesting. It is funny that we do not realize all of the things that are going on inside of us. It is almost as though we take this ability for granted. I am not sure exactly when this happened. It may also just be in a book i read. haha. But I remember hearing about a guy that cut his legs off just because he did not want them. I was thinking to myslef..."wow, how could anyone do this?" Seriously, it even makes me mad. This guy is lucky that he had perfectly working legs. Unlike some people that have nerves that are not working properly and stops them from being about to walk and carry out any other daily activities.