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Definitions
VOCAB
Term | Definition |
---|---|
Regulation | controls the amount and the direction of responses.it also promotes a proper coordination of responses to maintain homeostasis |
Irritability | Ability of a cell to respond to its environment |
Impulse | a sudden strong and unreflective urge or desire to act. |
Stimulus | something that causes a change in an organism which a response occurs. |
Response | action resulting from stimulus |
Receptor | (sense organs) specialized structures sensitive to certain types of stimuli. |
Neuron | the basic working unit of the brain, a specialized cell designed to transmit information to other nerve cells, muscle, or gland cells. |
Effector | body parts that respond to the nervous system commands.They can be muscles or organs |
cell body | contains the nucleus and other organelles.It is the cite from metabolic activities |
dendrites | hair-like structures which receive impulses first |
convolution | : one of the irregular ridges on the surface of the brain and especially of the cerebrum of higher mammals. |
axon | long thin structures that carries impulse away from the cell body to an effector |
reflex arc | the nerve pathway involved in a reflex action, including at its simplest a sensory nerve and a motor nerve with a synapse between. |
Cerebrum | It contains memory,thought,analyzing and the senses. |
Cerebellum | It maintains balance and it controls voluntary activities and some involuntary movement |
Medulla oblongata | controls involuntary activities. |
Central nervous system (CNS) | |
Peripheral nervous system (PNS) | |
Meninges | |
Neurotransmitter(s) | are brain chemicals that allow transmission signals from neuron to another |