Human brainsthe control center of the Central Nervous System (CNS)have 100 billion neurons, divided into the left and right hemisphere. Grey matter sits on the outside while white matter, which contains more axons, sits underneath. Other features of the brain are convolutions (wrinkles), gyrus, lobe, sulcus, fissure, and the cerebral cortex. Some key parts of the brain include the cerebrum, frontal lobe, parietal lobe, temporal lobe, occipital lobe, and corpus callosum. The limbic system establishes emotion, links higher and lower brain function, and helps store and retrieve memories. Some of its components are the amygdala, cingulate gyrus, hippocampus, olfactory bulbs/tracts, hypothalamus, and thalamus. Some disorders and conditions of the brain include seizures, concussions, meningitis, stroke, hemorrhage, aphasia, dyslexia, Parkinsons disease, and Alzheimers.
The cerebrum includes the frontal, parietal, temporal, and occipital lobes, as well as the limbic system, hippocampus, basal nuclei, olfactory bulbs, and ventricles
CSF (cerebrospinal fluid) ends up in the ventricles and around the surface of the brain for regulating blood flow in/out of the brain
The diencephalon includes the thalamus, hypothalamus, and pineal gland
The mesencephalon and the pons help connect the higher and lower parts of the brain
The medulla oblongata (majority of the brain stem) regulates automatic, vital functions of the body
The cerebellum helps to maintain the coordination of motor functions and balance
Meninges are protective membranes that wrap around the superficial portion of the brain
Some brain conditions/disorders include seizures, concussions, meningitis, stroke, and Alzheimer disease
Did you know…
Q: Can someone be born without a brain?
A: Technically, yes. It’s called “anencephaly”, when a baby is born without a cerebrum. Since they still are born with their diencephalon, midbrain, and brain stem, their heart is beating, they are breathing, and they will even do other unconscious actions like suckling and grasping motions with their hands! However, they will never experience conscious thoughts and the typical baby born with this disorder does not survive very long.
Nervous System Part 2: Brain
Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.
This book is the ninth edition of the top-selling Human Anatomy & Physiology text and the authors have produced the most accessible, comprehensive, up-to-date and visually stunning anatomy & physiology textbook on the market.. It presents information in smaller and more digestible bites, making it easier to read and navigate.
This book has a superb balance between structure and function and continue to emphasize the correlations between normal physiology and pathophysiology, normal anatomy and pathology, and homeostasis and homeostatic imbalances. The acclaimed illustration program continues to be refined and is unsurpassed in the market. The thirteenth edition is fully integrated with a host of innovative electronic media, including WileyPlus 5.0 (access purchased separately.) No other text and package offers a teaching and learning environment as rich and complete.
This book includes updated examples, references, and dozens of illustrations. Readers of the new edition will come to understand the meanings of terms in anatomy and physiology, get to know the body's anatomical structures, and gain insight into how the structures and systems function in sickness and health. It also features updated information on how systems function in illness and in health.