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The Nervous System.
| Question | Answer |
|---|---|
| Neurons | Specialized cells that recieve and send signals |
| Nerves | Bundles of tissue that carry signals from one place to another |
| Spinal cord | the column of nerve tissue that runs through the backbone |
| Central nervous system (CNS) | made up by e brain and spinal cord |
| Peripheral nervous system (PNS) | made by nerves that connect the brain and spinal cord to other parts of the body |
| Synapse | point between a neuron that is sending a signal and the neuron or other cell that is recieving the signal |
| Neurotransmitters | chemicals released at the ends of axons |
| Sensory nerves | nerves that carry the signals from the sense organs toward the CNS, where they are processed or relayed |
| Motor nerves | nerves that carry signals from the brain or the spinal cord to the muscles and glands |
| Brain | the main control center for the body |
| Cerebrum | the center of thought, imagination, and emotions; largest, most complex |
| Cerebellum | part of the brain that controls balance and posture and smooths out movement that requires fine coordination |
| Brain stem | part of the brain that guides signals coming from the spinal cord to other parts of the brain. |
| Spinal nerves | nerves that branch from the spinal cord and that go to the brain and to the tissues of the body |
| Reflex | is an involuntary response that enables he body to react immediately to stimulus, such as a possible injury |
Created by:
sbe
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