Thursday, May 3, 2012

The Brain


The Brain:



Our brain is the most complex organ and also the communication centre in our body. It communicates with various body organs (through the nervous system) to keep them working effectively together as an organized team to keep us healthy and happy. Our brain makes it possible for us to think, feel hunger, feel physical pain and pleasure, experience emotions, see with our eyes, hear with our ears, smell with our nose, walk and work, sleep, respond effectively during danger, and maintain different body function such as our heart beating, breathing etc.

Above all, our human brain has various other unique abilities that distinguish us from other living beings. On the other hand, it is these special abilities that bring both prosperity and destruction on us and on other living beings. It is because of human brain that we are able to think and reason out, analyses and be logical, remember, be imaginative and creative, be wiser or unwise, and be human or savage-like and so on.
So, our brain controls and governs everything we do, how we think, feel and act.  So, it is the control centre of our life that determines what kinds of persons we are.



According to modern science, our brain is divided into three main parts that are called the cerebrum, the cerebellum and the brain stem. The cerebrum (or cerebral hemispheres) makes up the largest part of our brain where learning, memory etc take place. The brain stem, which controls our involuntary activity such as breathing, is the lowest structure of the brain that is connected to our spinal cord.

The cerebellum which coordinates muscular activity such as walking, is the section located behind the brain stem.

The thalamus, hypothalamus and pituitary glands are situated in the central area of the brain. The thalamus relays sensory information to the cerebrum. The hypothalamus helps to regulate body functions such as thirst, hunger, sleep, anger, sexual behavior etc. The pituitary gland produces hormones that help growth, development and many other physiological functions. The pons medulla and midbrain are the structures that make up the brain stem. The natural cavities inside the brain that are filled with cerebrospinal fluid are called ventricles. The cerebrum of the brain is divided into four lobes, and some of these lobes are separated by deep grooves called fissures.

So, if our brain began to weaken, it may affect the working of almost any organ of our body giving us many health imbalances. Inability to move certain parts of the body, inability to reason logically, poor memory, headache, hallucinations, falling asleep suddenly are some health imbalances.