The human body is divided into many different parts called .
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 .
The Brain - Covering All Parts INTRODUCTION 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 flashes messages out to all the other parts of the body. ... The back area of the brain is divided into three different parts. ... The cerebellum sees to it that all the parts of your body work as a team. ...
From this surgical procedure it was discovered that the two hemispheres had different methods of processing information, as well as controlling parts of the body. ... Several experiments were done to test perception in the "split-brain" patients. ... Thus, many neurosurgeons have been reluctant to try the split-brain operation for fear of severing all vital communications. ... The procedure involves; opening the skull, laying back the brains coverings, then using a tool called a cerebral retractor to expose the corpus callosum. ... For almost all split-brain patients, the thoughts and perc...
The brain includes billions of neurons, so does your spinal cord and all the nerves that branch out from the spinal cord to the body's glands, organs, and muscles. ... It also serves as a protective covering made by glial cells, which is white and fatty. Axons with myelin sheath process information up to twenty times faster than axons without the covering. ...
(Toga, 2001) Its main function is to take care of all of the maintenance functions of the neuron. ... Other axons that do not have this protective covering are called unmyelinated axons. ... The above process then starts all over again. ... Interneurons are when neurons in one part of the brain communicate with other neurons in other parts of the brain. ... "Brain". http://encarta.msn.com/find/concise.asp?...
The Neuron A neuron is a cell that is located in the brain or spinal cord. ... There are 10 billion neurons that are interconnected in the brain. ... Other axons that do not have this protective covering are called unmyelinated axons. ... The above process then starts all over again. ... Interneurons are when neurons in one part of the brain communicate with other neurons in other parts of the brain. ...
One end of the tube becomes the spinal cord, the central canal of the neural tube becomes the complex ventricle system, and the other end thus becomes three swellings, that later become the three main parts of the brain; the forebrain, midbrain, and hindbrain (Restak Mind 35). ... A neuron consists of three basic parts, each as crucial as the other. ... Differentiation is the process of seemingly identical cells changing in to different parts of the brain. ... Just inside of the flesh there is a thick bone, called the cranial bone, that covers the top of the head, similar to the ho...
Crustaceans are nearly all aquatic and consist of lobsters, crabs, shrimps, barnacles, etc. ... All Arthropods are bilaterally symmetrical, and their bodies are covered with a tough exoskeleton. ... This hard covering protects the animal, and provides points of attachment for muscle cells; but also presents it with a unique problem during growth: because, unlike human epidermis, it is not living, and cannot grow with the organism. ... The system also enables Arthropods to exhibit complex behavior, and includes a dorsal brain and a double, ventral, solid nerve cord. ... Phylum Arthop...
ALD is one of the leukodytrophies that cause damage to the myelin sheath, the fatty covering on nerve fibers in the brain. ... All daughters of an affected male are carriers of the disease; none of his sons will be affected. ... A potion of the donated cells, which are not genetically defective, find their way into the brain, express the appropriate ALD protein that had been missing or not functioning properly and the brain damage is halted or reversed. ... All the issues related to the possible rejection of the host and donor cells would be significantly lessened. ... It uses molecular biol...
The main character, Major Kusanagi is a cyborg that is entirely synthetic except for her brain. Even that ( her brain ) has modifications. ... Definitions were a hard outer covering that encases an organism or an attitude or manner adopted to mask one's true feelings. ... When applied to the movie, all of these definitions can be seen in Major Kusanagi. ... I found this movie to be confusing at parts and very slow in the beginning but once I figured out what was going on I enjoyed it; even if it did take three times!...
