The brain is the center of the nervous system.. And this system lives up to its name, it makes ME very
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The anatomy of the nervous system is composed of neuron cells and glia.
First, let's examine the neurons.
Neurons receive and transmit information to other cells.
The neuron is composed of four major structures; dendrites, the soma, an axon, and presynaptic terminals. The human brain is composed of about 100 billion neurons!
Next, let's examine the glia.
Glia was discovered in 1846 by Rudolph Virchow.
Glia perform many functions; provide support and protection to neurons, maintian homeostais, remove waste, transport of nutrients, form myelin. Some of the types of glia include astrocytes, microglia, oliogodendrocytes, schwann cells, and radial glia. Each type performs a specialized function.
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| PAGE But there is so MUCH more to neurons and glia than the basic functions stated above..... |
Neurons, the electrochemical messengers, are in a stage known as the "resting potential". During the resting potential, neurons have a slightly negative charge inside the cell. The slight negative charge is obtained by the sodium-potassium pump. The sodium-potassium pump transports three sodium ions out of the cell and draws two potassium ions inside the cell. The resting potential of a neuron is disturbed and messages are carried out. This event is known as the action potential. Click here to see how an action potential plays out.
I really like how you talked about brain and that way you were able to talk about neurons and glia. You should have talked a little bit more about neurons, how they send information through the axon, or that they communicate via electrical impulses, that way all your emphasis wouldn’t be on glia since you were talking about the brain and nervous system, but it was still very interesting.
ReplyDeleteIt was great how you brought the history of the glia into your blog, and the cartoon was really cute, I like how it brought to light that all the parts of this system are important in brain activity.I kinda wish you had talked more about how you feel about the subject rather than just straight fact.
ReplyDeleteI liked how you gave some detail about neurons and glia. It helps me understand these two a bit more since they were a bit difficult for me to understand. I did not read much information about the brain as you mentioned it in the beginning of your blog though.
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