They are cells that transmit information throughout the system. Neurons are composed of cell bodies, dendrites, and axons. The cell body is the spherical part of a neuron that contains the nucleus. It can also be called the soma. Cell bodies connect to dendrites, which is what brings information to the cell body. Cell bodies also connect to axons, which is what sends information from the cell body to other neurons.
There are three types of neurons. Sensory neurons, Motor neurons, and interneurons. All of them contain cell bodies, dendrites and axons, but some also have myelin sheaths, which is what covers the axon and helps speed neural impulses.
These impulses are electrochemical signals that are called Action Potential, which is a brief electrical charge that goes down an axon and is caused by positive ions moving in and out of the axon. When more positives ions are outside of the axon, this is called “Resting Potential.” When an incoming message stimulates a section of the axon, this is called depolarization. Channels in the membrane will open to allow Na+ ions to enter the axon. “Repolarization” Is when channels open and allow K+ ions to exit the axon, and cases the next segment of the axon to depolarize.
“Glial cells” are cells that provide structural, nutritional, and other support for the neuron. “Nodes of Ranvier” are spaces between Shwann cells that wrap around the axon.
When a signal reaches the end of an axon, the signal is then sent to the next neuron in the network. This is called a Synapse. A synapse includes the tips of terminal branches of axons, tiny space between the neurons, and the ends of dendrites of the receiving neurons. Proper brain and nervous system functions depend on proper balance of excitatory and inhibitory Neurotransmitters. NT Disruptors are what fit into receptors like a key in a lock, and stop other molecules from fitting. Examples of these are Black widow spider venom and nicotine. Nicotine is an agonist as well, which is a molecule that has a very similar shape to acetylcholine, and mimic the action of it. Antagonists are what block NT from binding to the receptor. Snake venom is an example of this and causes paralysis of the muscles.
On a small family trip
In a small family ship
They find the closest spot to the moon.
And on it, they’ll be, quite soon
They scale their way to the top
With a broom, and a mop
Until a small comet crashes down
Making the kid turn around
And investigate what he saw
Then in came his Pa,
And the grandfather as well
Both of which, tried to tell
The kid to clean up the place
With one of their brooms, he must decide with haste.
But a giant star flies into view
And it seems no matter what they do
The star can’t be moved, it can’t be budged.
At least, that’s what the elders judged.
But the kid suddenly found the answer
As he climbed up top with his tiny hammer
He barely hit, and it shattered
Into tiny pieces which scattered
And fell to the ground, shining bright
Illuminating the dark night
They began cleaning up the mess with a broom
Into a crescent shape of the moon
Script and Works cited:
Social Media has been controversial between good and bad for a while. More specifically, since around 1997 when it first came out, and since then, even if we have improved it over time, the negative parts seems to never go away. When I say negative stuff, I’m talking about scams, false information, cyberbullying, and addiction. As we can all agree, social media can also do good things, such as let you know what’s going on in the world, communicate with people, and even see a person even if they are on the other side of the world. In my opinion, these goods things are more significant than the issues of social media because these issues aren’t necessarily issues if you don’t let them be. You can avoid a lot of these negative things by being smart about it and know what not to do. For example, if someone is harassing you online, and you are hurt by it, avoid communicating with that person and if you need to, block them so they can’t talk to you. Of course, there are other situations that can happen that’s not as simple to put an end to, but you can still avoid it from ever happening by watching what you are doing. Avoid scams by doing research before investing in it, avoid your accounts being hacked into by using unique passwords, make sure you have good posture so you don’t injure yourself, avoid using it for long amounts of time so you don’t strain your eyes, and most importantly, do not share too much online. When saying or sharing things, ask yourself “What could happen if other people see this?” because nothing is completely private even if you think it is. The person who received what you send could easily screenshot it and show other people. This could either lead to absolutely nothing, or something as bad as what happened to Amanda Todd, who took her own life because of someone who shared a private picture of her on social media and constantly harassed her, and this is not the only incident in which bullying people online has affected them to that extent which is a major issue, but it’s not just social media that this can happen on. It can also happen on basic phone calls or texts or in person. So, it’s always something that will unfortunately be there, even if we take away the easier opportunities to do it. This can also be avoided if we all understand the issue behind cyber bullying. Parents could talk to their kids more about not bullying as well as how to deal with it so that they know not to do anything they can regret online. The point that I’m trying to make is that social media can be bad, but can also be amazing when you use it correctly.
Social Media Picture:
“What is social Media and Why Is it Important?” – Article by Matthew Hudson, Opened on September 25th, 2019.
“How to Best Use Your Old Windows XP or Vista Computer” by Joe Keeley, opened on September 25th, 2019.
“HOW TO KEEP YOUR CHILD SAVE – CYBERBULLYING” – By Madeleine Da Silva, opened on September 25, 2019.
“Vector – Social Media Communication World Map Concept Internet Network Connection People Flat Vector Illustration” By 123RF, opened on September 25th
“Expert Advice on How to Deal with Online Harassment” by Anna Goldfarb, Opened on September 25th, 2019.
“Most Common Online Scams” By Mary Landesman, Opened September 25th, 2019
“CAN THE LACK OF PRIVACY DUE TO TECHNOLOGY ADVANCEMENT ACTUALLY BE A GOOD THING?” By BlackPebbleGirl. Opened on September 25, 2019
“Suicide of Amanda Todd” From Wikipedia, opened on September 26, 2019
“Stop Cyber Bullying: How To Talk To Your Child About Online Safety and Cyber Bullying” by KidGuard, opened on September 26, 2019
“SOCIAL MEDIA: THE GOOD, THE BAD, AND THE UGLY” by SRassi, opened on September 26th, 2019