THE BRAIN
The brain is the most important organ in the human body. It is the computer system where all the information that happens all around you is processed. The brain is the most important factor in the nervous system. The brain may look simple at first site, but after thinking about it a little bit more, it is just the most complex thing to understand. How many brains do you think you have? One! Beep! Wrong! You have three brains. One of the brains is cut in half, the cerebrum, but this one counts as two brains. The others is at the back of your head, the cerebellum.
The cerebrum has two large hemispheres. They have a deep fold in the middle. This is where your thinking occurs. These two hemispheres have a crossover system. The left brain controls the right part of your body and the right brain controls the left part of your body! That is so weird isn't it? In the cerebrum, there are four visible lobes, the parietal lobe, temporal lobe, occipital lobe, and the frontal lobe.
The lobes are located in the cerebrum. The frontal lobe is the largest lobe and is related to speech. The parietal lobe controls your sense of hearing. The occipital lobe has to do with vision. The last lobe, the temporal lobe, controls your hearing, perception, and some memories are stored there.
The third brain is the cerebellum. The cerebellum coordinates your body movements and controls only the voluntary muscles. It also coordinates your posture and balance. It controls motor activities like running. It makes you conscious and decides if you are move quickly or not.
The brain functions in different areas. The memory is a very complex kind of function in the brain. There are three kinds of memory. Instant recall memory is the ability to recall a set of phrases and numbers instantly right after you hear them. Short term memory is the memory where you remember what happened from 60 minutes to one day. The last and final memory is long term memory, where you can remember what happened from one month to several years. Long term memory is more or less permanent. None of the memories are alike. Memory is classified by their contents. There is verbal memory, the ability of being able to remember what you say and the languages you speak. Spatial memory is the memory of forms, positions, and the movement of objects. The episodic memory is in charge of times, places, and events in your life. Declarative memory is the memory that functions in the facts of everyday life. All the information that you remember is part of this memory. Motor learning is the memory that you process and improves movement skills through practicing. Finally, the working memory lets you keep track of your conversations.
There are so many damages to the brain that can affect it severely. Head injury can be the lead to several deadly events in your brain that can damage it. After being hit in the head, you can loose consciousness or stunned. This is called concussion. This kind of damage leaves no permanent damage, but if the blow in the head is really strong, then it can lead to a temporal blindness, dizziness, paralysis, or a severe headache. That depends on the place that you hit. Damage to the cerebrum can result a personality change. If you damage your broca area, you can damage your speech skills, which include speaking and writing. Injury in the Wernicke's area, you are unable to comprehend spoken and written language. Damage to the brain stem is deadly, because the brain stem controls the breathing, heart rate, and blood pressure. Damage to the medulla oblongata, a part of the brain stem, can cause immediate death.
You have to take care of yourself. Don't try to hit yourself in your head so many times. You know the consequences. It is impossible to live without a brain, either one's own or borrowed.