Parietal Lobe

Humans can identify galaxies light years away from earth, they can study particles smaller than atom, but they have not yet completely discovered the mystery of the three pound of matter that flows in their head. The brain is considered the most complex device in the universe. Scientist learned more about the it for the last five years than the five thousand years ago.

The human brain is the command center of the human body, it gives each individual his personality. It collects information from outer and inner sensation areas, it also controls thoughts and movement. A better, effective and simpler way to discover this complicated organ scientist have defined it in to parts and regions. The biggest part in the brain called cerebrum, which divided

The outer layer “cortex” is only three point seventeen millimeters. But it also holds millions of cells with fibers the transports information through the brain areas. Hundreds of folded lines that hold two third of the brain surface makes the wiggly visible, unlike animals that are less intelligent, where they have a smoother brain surface. The cortex contains four parts, first the frontal lobe is responsible for these following functionalities, emotions, higher thinking skills like problem solving, personality and controlling movement. The frontal lobe keeps developing until the age of twenty-six. Second the Temporal Lobe receives information about hearing and helps process language, reading, and other senses. Third the Parietal Lobe is related with the senses such as attention and language. last the Occipital lobe provides information about the vision including identifying the differences of shapes and colors. Now the Thalamus is located in the center of the brain sends sensory and motor information and controls the chemical signals of sleep, consciousness, and alertness. Twelve pairs of cranial nerves relays data from the sensory motor to and

It holds the key reward which releases chemicals dopamine that produce the sense of pleasure. That feeling drives human to repeat his behavior like eating, drink, having fun, or making love. But it also may push some others try to hunt that feeling repeatedly by seeking drugs. Nerve cells or neurons, they share same structure as other cells but they have electric and chemical that uses it to transfer information among themselves. The brain is made up of billions of neurons. Although they are different in shape and size, some of them less than a millimeter long and other that runs the whole length of a human leg. No matter how big it is they all contain three basic parts, the Soma contains the nucleus, DNA, mitochondria and ribosomes, the Dendrites is the receiver, receives messages from other neurons, and the Axon is the sender it sends messages through to other neurons, glands or muscles. The contact between the neurons known as synapses, they are extremely small gaps. There are over a hundred-different type of neurotransmitters. When somebody takes drug, it affects the neurotransmitters to burst out through during the synaptic gap and blocks it from coming back as they should. And that is the reason why the person feels