The human body is divided into many different parts called organs. All of the parts are controlled by an organ called the brain, which is located in the head. The brain weighs about 2.75 pounds, and has a whitish-pink appearance. The brain is made up of many cells, and is the control centre of the body. The brain flashes messages out to all the other parts of the body. The messages travel in very fine threads called nerves. The nerves and the brain make up a system somewhat like telephone poles carrying wires across the city. This is called the nervous system.
The nerves in the body don't just send messages from the brain to the organs, but also send messages from the eyes, ears, skin and other organs back to your brain. Some nerves are linked directly to the brain. Others have to reach the brain through a sort of power line down the back, called the spinal cord. The brain and spinal cord make up the central nervous system.
The brain doesn't just control your organs, but also can think and remember. That part of the brain is called the mind.
PROTECTING THE BRAIN.
Twenty-eight bones make up the skull. Eight of these bones are interlocking plates. These plates form the cranium. The cranium provides maximum protection with minimum weight, the ideal combination. The other twenty bones make up the face, jaw and other parts of the skull.
Another way the brain keeps it self safe is by keeping itself in liquid. Nearly one fifth of the blood pumped by the heart is sent to the brain. The brain then sends the blood through an intricate network of blood vessels to where the blood is needed. Specialized blood vessels called choroid plexuses produce a protective cerebrospinal fluid. This fluid is what the brain literally floats in.
A third protective measure taken by the brain is called the blood brain barrier. This barrier consists of a network of unique capillaries. These capillaries are filters for harmful chemicals carried by the blood, but do allow oxygen, water and glucose to enter the brain.
Fossils of the hominoid cranium are not available until 2 million years after the proto-human lineage begins. The lack of cranial fossils for 2 million years is a problem. ... Origins of the human brain, edited by Jean-Pierre Changeux and Jean Chavaillon. ... Origins of the Human Brain. ... Origins of the Human Brain. ...
The human brain only has a limited amount of storage space, including memory. ... The often-cited experiments by George Miller in 1956 suggest that the number of objects an average human can hold in working memory (known as memory span) is between 5 and 9 (7 ± 2, which Miller described as the "magical number", and which is sometimes referred to as Miller's Law). ... Particularly, it is proven and shown that the brain size has a significant factor in not only the human evolution but in terms of the function of the brain as well. ... This shows how the human brain is limit...
Leamnson raises the idea of new developments in brain research and learning that is rapidly advancing our conceptualization of the human brain (2). ... The human brain increases in mass several-fold between birth and adulthood. ... This means that we may have fewer brain cells, we are still increasing the connections between the cells (2). ... Scientists have verified that like a thumbprint, every human brain develops uniquely and expands at its own pace. ... The systems of the human body are integrated differently in every brain, and as learning changes the structure of the brain, the mor...
The Human Brain The human body is divided into many different parts called organs. ... THE CEREBELLUM: One of the most important part of the Human brain is the cerebellum. ... It also controls our sensations and voluntary movements, stores our memories and gives us the ability to imagine, in short it's what makes humans, humans. ... CONCLUSION After all of the work and research that we have done it is very evident to us that the brain is one of the most wondrous organs that humans could have. ... The Brain and Nervous System by Lambert, Mark copyright Macmillan Ed...
The Human Brain The human body is divided into many different parts called organs. ... THE CEREBELLUM: One of the most important part of the Human brain is the cerebellum. ... It also controls our sensations and voluntary movements, stores our memories and gives us the ability to imagine, in short it's what makes humans, humans. ... CONCLUSION After all of the work and research that we have done it is very evident to us that the brain is one of the most wondrous organs that humans could have. ... The Brain and Nervous System by Lambert, Mark copyright Macmillan Ed...
First generation CAT scanners although primitive were able to provide the first 3D images of the human brain this tool has adversely affected the outcome of patients suffering from head injuries, strokes, tumors, cancers, and other illness and diseases. ... First generation CAT scanners although primitive were able to provide the first 3D images of the human brain this tool has adversely affected the outcome of patients suffering from head injuries, strokes, tumors, cancers, and other illness and diseases. ... Recent research indicates only approximately 6.3 percent of patients with doc...
It is ideal to have the ratio of inhibitory modulating amines (dopamine and phenylethylamin) greater than that of the excitatory amines (norepinephrine, epinephrine, and serotonin) (Flanagan 2). ... When too much fat is consumed, it can change the fatty composition of the cell membrane (Foods for our Thoughts 2). ... Psychologist James Penland, Ph.D., at the US Department of Agriculture's Grand Forks Human Nutrition Research Center conducted an experiment in which he discovered that the subjects who ate little boron brain's electrical activity was more sluggish than of th...
THE HUMAN BRAIN VS. ... The human brain is responsible for thought, feelings, creativity, and other qualities that make us humans. ... One of the reasons is there are too many emotions to be described and 2 they can be a mixture of feelings that it would be hard to put it into one category. ... Another difference between the human brain and the computer is, the creativity of the human brain. ... In conclusion, the human brain is more comprehensive than any modern computer. ...
The human circulatory system The human circulatory is one of, if not the, most important system in the body.It consists of such organs as the heart, and lungs? ... (2-4). ... (2). ... If your brain is deprived of oxygen for more than four minutes your brain will die? (2). ...
