What functions are carried out by the human brain concept covered the brain an overview 210/12/2023 The frontal lobes, located behind the forehead, are involved with speech, thought, learning, emotion, and movement. The cerebrum has two halves, or hemispheres, that are further divided into four regions, or lobes. It's packed to capacity inside our skulls, with deep folds that cleverly maximize the total surface area of the cortex. Animals such as elephants, dolphins, and whales actually have larger brains, but humans have the most developed cerebrum. It's the cerebrum that makes the human brain-and therefore humans-so formidable. The distinctive, deeply wrinkled outer surface is the cerebral cortex. The cerebrum is the largest part of the brain, accounting for 85 percent of the organ's weight. We could not breathe, play, love, or remember without the brain. Together, this complex network of cells gives rise to every aspect of our shared humanity. Different types of glial cells provide physical protection to neurons and help keep them, and the brain, healthy. Neurons are notable for their branch-like projections called axons and dendrites, which gather and transmit electrochemical signals. Weighing in at three pounds, on average, this spongy mass of fat and protein is made up of two overarching types of cells-called glia and neurons-and it contains many billions of each. Here’s something to wrap your mind around: The human brain is more complex than any other known structure in the universe.
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