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Nervous Regulation

TermDefinition
Regulation Controls the amount and the direction of responses. It also promotes proper coordination of responses to maintain homeostasis.
Irritability Ability of a cell to respond to it's environment
Impulse a sudden strong and unreflective urge or desire to act.
Stimulus Something that causes a change in the environment which results in a change in an organism to which a response will occur.
Response Action resulting from the stimulus.
Resptor (Sense organs) Specialized structures sensitive to certain types of stimuli.
Neuron specialized cell transmitting nerve impulses; a nerve cell.
Effector Body parts that respond to nervous system command. They be muscles or glands.
Dendrites Hair like structures, which receive impulse(s) first.
cell body (cyton) contain the nucleus and other organelles. It is the site for metabolic activities.
Axon long thin structure that carries impulse away from cell body to an effector (muscle or gland) or other neurons. Myelinated axon allows impulses to travel faster by jumping.
Meninges Inflammation of the meninges (membranes) surrounding CNS caused by bacteria.
cerebrum The largest part of the brain. It has a right and left Hemisphere and Convolution ( folds). It contains memory, thought, analyzing and the senses.
cerebellum It's too has a left and right hemisphere and convolutions. It maintains balance (equilibrium) and controls all voluntary and some involuntary movement.
medulla oblongata The lowest part of the brain the controls many involuntary activities.
central nervous system (CNS) Brain and spinal cord. Its protected by bones, meninges, and cerebrospinal fluid.
Peripheral nervous system ( PNS) All other neurons outside the CNS. It's divided into somatic and autonomic nervous system.
Neurotransmitter(s) Brain chemicals that allow transmission of signals from one neuron to another. They are hormones.
Created by: Lavay
 

 



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