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Nervous Regulation
| Term | Definition |
|---|---|
| Regulation | controls the amount and the direction of responses |
| Irritability | ability of a cell to respond to its enviroment |
| Impulse | change in momentum |
| Stimulus | something that causes change in the environment which results in a change in an organism to then have a response occur |
| Response | action resulting from the stimulus |
| Receptor | specialized structures sensitive to certain types of stimuli |
| Neuron | electrical and chemical impulses that are transmitted only along the cell membrane |
| Effector | body parts that respond to nervous system command |
| Cell Body | contains the nucleus and other organelles |
| Dendrites | hair like structures that receive impulses first |
| Axon | long thin structure that carries impulse away from the cell body to an effector or other neurons |
| Meninges | the three membranes that line the skull and vertebral canal and enclose the brain and spinal cord |
| Cerebrum | contains memory, thought, analyzing and the senses; major part of the brain |
| Cerebellum | contains balance and controls all voluntary and involuntary movement |
| Medulla Oblongata | lowest part of brain; controls many involuntary activities |
| Central Nervous System (CNS) | protected by bones, meninges and cerebrospinal fluid; brain and spinal cord |
| Peripheral Nervous System (PNS) | all the other neurons outside the CNS; divided into somatic & autonomic nervous system |
| Neurotransmitter(s) | brain chemicals that allow transmission of signals from one neuron to another; hormones |
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ItzxVanna
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