Of all things that man is different from other living beings, the most important is the brain.
Some “lower” animal species do not have a brain, or have a small, or poorly developed brain. For example, the earthworm has a brain as big as the head of a pin, or rabbit’s has a brain like a thimble.
How big is human brain? The human brain weighs an average of 1,350 grams (2.97 pounds) and is around 15 centimeters (5.9 inch) long, but the size of the brain is not the most important thing. The elephant has a larger brain than a man, but its brain is not developed as in human.
Did you know… Theoretically, the brain can “save” same amount of informations as 4.7 billion books…
Major parts of brain
The brain has three major parts: the forebrain, midbrain, and hindbrain.
The forebrain is considered the most important part because it manages all of our voluntary actions. It’s the biggest part of the human brain. It fills almost the entire space at the top and back of the skull.
It is divided into two equal halves or hemispheres, and its surface is covered with grooves and twigs, making up the gray mass formed by the bodies of the nerve cells. Below this surface layer, called the bark (latin cortex), there is a white mass of nervous fibers. Through this mass passage the paths which transmit messages in the brain bark and from it.
Did you know… Humans have the largest brain in size compared to the size of the body…
Special parts of the brain bark control some of the functions of the organism, and the other parts with other functions, so that each part of the bark is different. Science has revealed in which parts of the bark there are centers for the sight, feeling, hearing or movement of some muscles. Therefore, when only one part of the brain is injured, it loses a certain function, such as speech.
Did you know… One half of the brain controls one side of the body, and the other half controls the other side. For example, the right half of the brain controls the left leg, left arm…
Midbrain and hindbrain
The midbrain or mesencephalon is part of the central nervous system associated with the senses of hearing, hearing, motor control, sleep, excitement and temperature regulation.
The hindbrain is located in the back of the skull, beneath the forebrain and midbrain. It controls the maintenance of balance and muscle coordination. If a hindbrain is hurt, a person may become incapable of walking right or standing upright.
Did you know… The brain works for a while when the “body dies”. The activity of brain cells of people on deaths lasts for a few minutes after heartbeat stops…
The extended spinal cord is large as a tip of the thumb and is located at the upper end of the spinal cord. It controls breathing, heartbeat and many other actions that seem to be doing it by ourselves. It intersecting nerve fibers that go from the brain to the spinal cord.
5 crazy facts about the human brain
Your brain is capable of having more ideas than the number of atoms in the known universe.
The brain produces enough energy to power a bulb of 10 to 23 W.
Brain size and weight have absolutely no connection to the intelligence coefficient (IQ).
The brain without oxygen can survive for 4-6 minutes.
The brain can create a fake memory, ie, create an event in your childhood that has never really happened.
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