The brain consists of cerebrum, brainstem, and cerebellum. The cerebrum contains two hemispheres connected by corpus callosum. Each hemisphere has four lobes: frontal, parietal, temporal, and occipital. The brain contains 86 billion neurons and 85 billion non-neuronal cells
Cerebral cortex is outer layer of neural tissue in cerebrum. Contains 14-16 billion neurons organized into horizontal layers. Divided into four major lobes: frontal, parietal, temporal, occipital. Cortex is folded into gyri (peaks) and sulci (grooves). Human cortex is 2-4 mm thick, making up 40% of brain mass
Grey matter contains neuronal cell bodies, neuropil, glial cells, synapses, and capillaries. It appears light grey with yellowish or pinkish hues from blood vessels. Distinguished from white matter by its lack of myelinated axons
The cerebrum is the largest part of the brain, containing cerebral cortex and subcortical structures. It develops from the forebrain prenatally, with dorsal telencephalon becoming cerebral cortex. The cerebrum is divided into two C-shaped hemispheres separated by longitudinal fissure. The cerebral cortex folds into gyri and sulci in larger mammals
YourTango linked DiCaprio's dating decisions to neuroscience's 25-year brain maturity theory. The myth has influenced various social and policy decisions since 2000. The Uvalde school shooting case highlighted the need for age-appropriate gun laws
Teens exhibit adult-like thoughts and rational goals. They can make future plans and understand long-range goals. Most teens become legal adults in most states