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BIOL 121P

Topic 9 - Nervous System

QuestionAnswer
Homeostasis the body's process of maintaining a stable internal environment
Central Nervous System brain and spinal cord
Peripheral Nervous System nerves connected to spinal cord
Sympathetic fight or flight
Parasympathetic rest and digest
Brain Stem relays information, autonomic control of heart, lungs, and digestive system
Cerebellum coordination of complex motor patterns
Cerebrum memory and conscious thought
Thalamus receives sensory information and sends to other brain parts for processing
Hypothalamus maintains homeostasis, controls body temperatures/links to nervous system
Diencephalon relays information and controls homeostasis
Left Hemisphere language, logic, analystical thinking
Right Hemisphere creativity, emotions, imagination, spatial awareness
Corpus Callosum nerve fibers connecting left and right hemispheres
Frontal Lobe decision making, emotions, movement
Temporal Lobe hearing, memory, speech
Parietal Lobe movement, recognition, perception
Occipital Lobe vision, vision processing
Motor Cortex planning and implementing movement
Broca's Area motor speech area
Wernicke's Area speech interpretation area
Lateralization of Brain Function the tendency for neural functions to be specialized to one side of the brain or the other
Aphasia impairment of language
Nodes of Ranvier gaps in myelin sheath
Depolarized when the membrane potential becomes more POSITIVE than it is at resting potential
Hyperpolarized when the membrane potential becomes more NEGATIVE than it is at resting potential
Action Potential occurs when a neuron sends information down an axon
Relative Refractory Period makes in difficult to get an action potential
Absolute Refractory Period impossible to get an action potential due to Na channel inactivation
Neurodegenerative Disorders loss of nervous system caused by death of neurons (ex: Alzheimer's, Huntington's)
Neurodevelopmental Disorders development of nervous system is disrupted (ex: Autism, Fragile X)
Created by: user-1992551
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