The Ridges are called GYRI, and the grooves are called SULCUS. These FOLDS and the GROOVES INCREASE the Surface Area of the Cerebrum. The MOST Obvious FEATURE on the surface of each hemisphere are NUMEROUS FOLDS. The Hemispheres are Connected in a region known as the CORPUS CALLOSUM. There is a DEEP GROVE that separates the Two Hemispheres. Hemispheres are linked by a bundle of neurons called A TRACT tells each half of the brain what the other half is doing. (SKULL) The CEREBRUM IS DIVIDED INTO TWO HEMISPHERES, THE LEFT AND RIGHT CEREBRAL HEMISPHERES. The Cerebrum takes up most of the space in the cavity that houses the Brain. IT FUNCTIONS IN LANGUAGE, CONSCIOUS THOUGHT, MEMORY, PERSONALITY DEVELOPMENT, VISION, AND OTHER SENSATIONS. It is the site of INTELLIGENCE, LEARNING AND JUDGMENT. The Cerebrum is responsible for all the VOLUNTARY (CONSCIOUS) ACTIVITIES OF THE BODY. The LARGEST and most PROMINENT part of the Human Brain is the CEREBRUM. THE CEREBRUM IS THE CONTROL CENTER OF THE BRAIN. If the Oxygen supply to the brain is cut off even for a few minutes, the brain will usually suffer enormous damage. In order for the Brain to perform its functions, it must have a constant supply of Food and Oxygen. The Cerebrospinal Fluid is a clear liquid that PROTECTS the Brain from mechanical injury by acting as a Shock Absorber. Within the Ventricles, Cerebrospinal Fluid acts as a Transport Medium for substances that are important to Brain Function. Ĭerebrospinal Fluid separates the middle and inner Meninges and fills four interconnected VENTRICLES, or Cavities in the Brain. Between the Pia Mater and the Arachnoid is a space filled with CEREBROSPINAL FLUID. The ARACHNOID is the THIN, elastic, weblike layer between the PIA MATER and the DURA MATER. The OUTER Layer, called the DURA MATER, is composed of Thick Connective Tissue. It is a FIBEROUS LAYER made up of many Blood Vessels which carry FOOD and OXYGEN to the Brain. The INNER most layer, which covers and is bound to the surface of the brain, is called PIA MATER. Ĭonnective Tissue connects one tissue to another. The Brain is also WRAPPED in THREE LAYERS of CONNECTIVE TISSUE known as the MENINGES. The Brain is Protected by a BONY Covering called the SKULL. The Brain is a highly organized ORGAN that contains approximately 100 billion neurons and has a MASS of 1.4 Kilograms. The brain has three main parts: The cerebrum The cerebellum The brain stem The spinal cord provides the link between the brain and the rest of the body. The brain is the main switching unit of the central nervous system It is the place to which impulses flow and from which impulses originate. Much of the brain is dedicated to running the body, the brain is responsible for maintaining Homeostasis by controlling and integrating the various systems that make up the body. THE BRAIN The brain is responsible for many of the qualities that make each individual unique-thoughts, feelings, emotions, talents, memories, and the ability to process information. Functioning as a unit, these neurons make up the most complex and highly organized structure on Earth. Despite this relatively small mass, the brain contains approximately 100 billion neurons. THE BRAIN The adult human brain weighs an average of 1.4 kg, or about 2 percent of the total body weight.
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