The brain of the modern-day human - Homo sapiens sapiens - is globular, unlike the brains of other early hominids, which were slightly elongated at the back. They have a high water content as well as a large amount (nearly 60 percent) of fat. the cerebrum, which is the largest part of our brains and fills up most of the skull it houses the cerebral cortex (that has a left and a right hemisphere separated by a long groove) and other, smaller structures, all of which are variously responsible for conscious thought, decision-making, memory and learning processes, communication, and perception of external and internal stimuliР”В«rains are made of soft tissue, which includes gray and white matter, containing the nerve cells, non-neuronal cells (which help to maintain neurons and brain health), and small blood vessels.

the cerebellum, which is located at the back of the brain and which is deeply involved in regulating movement, motor learning, and maintaining equilibrium.the brainstem, which, like a plantРІР‚в„ўs shoot, is elongated, and which connects the rest of the brain with the spinal chord.The human brain makes up, alongside the spinal chord, the central nervous system. Instead, Brazilian neuroscientist Suzana Herculano-Houzel has discovered - by using a method that required liquefying donated human brains and turning them into a clear solution - that the number is closer to 86 billion neurons. Traditionally, it has been said that the human brain contains approximately 100 billion neurons, but recent investigations have questioned the veracity of that number.

Of all mammals, the sperm whale - an underwater denizen weighing an impressive 35РІР‚вЂњ45 tons - is known to have the biggest brain.Р”В«ut, of all the animals on Earth, human brains have the largest number of neurons, which are specialized cells that store and transmit information by electrical and chemical signals. In terms of dimensions, the human brain isnРІР‚в„ўt the largest. However, studies have suggested that the adult male brain weighs, on average, about 1,336 grams, whereas the adult female brain weighs around 1,198 grams. In this Spotlight, we look at some of the most important facts we have uncovered about the brain - and some aspects that remain to be understood.Р”В«rain size varies widely, depending largely on age, sex, and overall body mass. Since then, our understanding of the brain has expanded immeasurably, although still we contend with many mysteries surrounding this key organ. The first mention of this organ was recorded in an Ancient Egyptian medical treatise known as the РІР‚Сљ Edwin Smith surgical papyrus,РІР‚Сњ after the man who discovered this document in the 1800s. The main organ of the human nervous system, the brain manages most of our bodiesРІР‚в„ў activities and processes information received from both outside and inside the body and is the very seat of our emotions and cognitive abilities, including thought, long- and short-term memory, and decision-making. Musing on how this fascinating organ is able to encompass so much information about the self and the world, she wrote: Her verses express a sense of awe, considering the brainРІР‚в„ўs marvellous capacities of thought and creativity. In a poem written around 1892, American poet Emily Dickinson described the wonder of the human brain. Share on Pinterest Brain size can vary, depending on age, sex, and overall body mass.

Is the brain an organ