The human nervous system's central processing unit is the brain. The body's sensory organs provide signals to it, and it gets information to send to the muscles. The human brain is similar to other mammal brains in terms of its basic structure, but it is larger in proportion to body size than the brains of many other mammals, including dolphins, whales, and elephants.

A HUMAN BRAIN WEIGHS HOW MUCH?

A person's brain contributes 2% of their body weight and weighs roughly 3 lbs (1.4 kg) in total. According to Northwestern Medicine in Illinois, male brains are generally 10% larger than female brains. In comparison to the average female brain, which has a volume of 69 cubic inches, the average male brain has a volume of roughly 78 cubic inches (1,274 cubic centimetres) (1,131 cubic cm). 85% of the weight of the brain is made up by the cerebrum, which is the primary portion of the brain and is situated in the front of the skull.

HOW MANY BRAIN CELLS ARE THERE IN A HUMAN?

According to a 2012 study that was published in the Proceedings of the National Academy of Sciences, the human brain has roughly 86 billion nerve cells (neurons), sometimes known as 'grey matter.' About the same number of non-neuronal cells, such as oligodendrocytes that surround neuronal axons with myelin sheaths, are present in the brain. Since axons (thin strands via which electrical impulses are transferred between neurons) have a white appearance as a result, they are referred to as the 'white matter' of the brain.

Additional Interesting Brain Facts

The Dent Neurologic Institute asserts that the brain is incapable of multitasking. Instead, it switches between tasks, which causes more mistakes and delays.The human brain grows by a factor of three in the first year of life before reaching full development at about age 25.

Humans utilise the entire brain, not just 10% of it, constantly. According to Northwestern Medicine, the brain is 60% fat. 23 watts of electrical power, or about the same as a small lightbulb, can be produced by the human brain.

THE BRAIN'S ANATOMY IN HUMANS

The cerebrum, which is separated into two hemispheres, is the largest portion of the human brain, according to the Mayfield Clinic. The frontal, parietal, temporal, and occipital lobes are the four parts of each hemisphere. Cortex describes the cerebrum's wavy exterior. The brainstem rests behind the cerebellum, which is located beneath the cerebrum. 

For cognitive processes like planning and cognition, as well as for the regulation of voluntary movement, the frontal lobe is crucial. Memory and emotion production occurs in the temporal lobe. Navigation and spatial orientation depend on the parietal lobe's ability to integrate information from several senses. In the occipital lobe, which is situated close to the rear of the skull, visual processing occurs.

IS A DEAD PERSON'S BRAIN STILL A LIVING THING?

A significant achievement for the project and neuroscience research in general occurred in April 2019: Nenad Sestan, a BRAIN Initiative researcher at Yale School of Medicine, revealed in an article published in the journal Nature(opens in new tab) that his research team has revived some cellular processes in the brains of dead pigs four hours after their deaths. 

This information was earlier provided by Live Science. The findings refuted the conventional wisdom that occurs quickly after the heart stops beating, brain cells are rapidly and irreparably damaged.