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The Central Nervous System: The Brain Tour
Transcript of The Central Nervous System: The Brain Tour
Central Nervous System
BRAIN TOUR The Central Nervous System (CNS) is comprised of the brain and the spinal cord. It controls all body functions, processes all incoming information, and sends out instructions to different body parts. Frontal Lobe Located in the front of the central sulcus. Engaged in motor control and cognitive tasks like planning, decision making, and setting goals. Parietal Lobe Found directly behind the central sulcus. In charge of feelings of touch, pain, and temperature. Occipital Lobe Positioned at the back of the head. Interprets visual information. Temporal Lobe Situated below the lateral fissure. Duties include the process of hearing. Cerebellum Coordinates movements of the body, manages posture, and sustains equilibrium. Brain Stem Medulla Regulates breathing, heartbeat, and blood pressure. Pons Provides feedback to the cerebellum and other brain stem structures. Reticular Formation A compact network of nerve cells that arouses the brain to new stimulation. Motor Cortex Controls the body's voluntary muscles. Somatosensory Cortex Receives sensory information from several body areas. Auditory Cortex Collects and interprets auditory information. Visual Cortex Visual Cortex Manages visual information. Association Cortex High-level brain processes. High-level brain processes. Association Cortex Cerebral Cortex Thalamus Hypothalamus Limbic System Broca's Area Paul Pierre Broca discovered this region to be connected to speech production. Slow destruction of the Broca's area by brain tumors can leave speech relatively intact suggesting its functions can shift to nearby areas in the brain. Wernicke's Area An area located in the rear of the left temporal lobe of the brain. It is associated with the ability to recognize and understand spoken language. It is named for its discoverer, German neurologist and psychologist Carl Wernicke (1848-1905). Cerebral Cortex The outer layer of the cerebrum. Comprised of billions of cells. It is approximately one tenth of an inch thick. Limbic System Hippocampus Acquisition of implicit memory. Amygdala Regulates emotion, formation of emotional memory, and aggression. http://brainmind.com/Amygdala44.html Thalamus Conveys incoming sensory information to the cerebral cortex. According to Mark Cowen, Senior MedWire Reporter, dysfunction in the thalamus may be responsible for bipolar I disorder (BDI). Hypothalamus A structure of the limbic system. Directs motivated behavior. http://www.hypothalamusdisorders.com/ Corpus Callosum The channel that relays messages back and forth from one hemisphere to another. Cerebrum Occupies 66% of the entire mass of the brain. Cerebral Hemisphere The two halves of the brain which are connected by the corpus callosum. Hemispheric Lateralization The idea that some functions are isolated to one hemisphere of the brain. The two hemispheres untilize two different methods of processing. The left hemisphere seems to be analytic hemisphere. The right hemisphere seems to be the holistic hemisphere.
Where does personality end and brain damage begin?