Human Brain, The Brain Facts
Made up of about 100 billion neurons and contributing nearly 2% of body-weight, brain is the supreme structural and functional unit and control center of the body and the superior-most region of CNS (Central Nervous System). Broadly speaking, major part of the brain is comprised of the hemispheres (left & right) of cerebral cortex. Cerebellum, the horizontally furrowed structure of brain’s rear part, is located behind brainstem that is attached to cerebrum.
Primary components and associated structures of brain work in coordination with one another and execute a number of vital functions, viz. growth, maintenance, reproduction, sexual maturity, alarming and responding to environmental hazards, and personal & behavioral developments.
Like other structures of the body, the master organ is also vulnerable to a number of disorders, injuries, damages and severe ailments that can lead to the immediate death of the victim. Meningitis, encephalitis, concussion, intracerebral hemorrhage, brain tumor, hydrocephalus, and hemorrhage stroke are some of the major conditions that can be addressed through various available and successful treatment measures.
Some Amazing Facts About Human Brain
- The brain of a male, having the same height and surface area of body as that of a female, weighs 100 gram heavier!
- The difference of brain weight in opposite sex members has no obvious relation with their IQ (Intelligence Quotient) or any other measure of the cognitive efficiency.
- The mean volume of a fully grown-up male and female brain-mass measures about 1260 cm3 (cubic centimeter) and 1130 cm3, respectively.
- The average weight of an adult human brain is about 1,500 gram (1.5 Kg), but it also shows great variance from one individual to the other.
- Concerning brain-to-bodyweight ratio, human skull contains the largest living brain structure as compared to all the other animals.
- Human brain is almost thrice as large as that of a chimpanzee, and two times larger than that of bottlenose dolphin.
- Cerebrum (or telencephalon) is the major part of brain that is not only largest in size but also the most developed of all the major structural divisions of the brain.
- viii. Thinking and reasoning are some of the most complex activities of human brain that still remain least understood even in this post modern age.
- ix. The gray or whitish matter of brain is composed of neuron cells that are responsible for gathering and transmitting signals or nerve impulses and delivering the processed responses back to the same regions to carry out desired actions.
- The voltage variations in the electrical activity along your scalp are recorded by a process called EEG (Electroencephalography) that is actually the measure of ionic current flowing through the neuron cells.