Term
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Definition
- Keeps capillaries anchored close to neurons
- Regulates capillary permeability& chemical environment surrounding neurons
- Involved in cell intergration through the regulation of extra-cell potassium concentration
- Helps recycle neurotransmitters
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Term
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Definition
- Myelin production
- Helps in production of neuron "webs" that work together to make neural circuits
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Term
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Definition
| Ciliated cells that circulate Cerebral Spinal Fluid(important for nourishing and protecting brain and spinal fluid) |
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Definition
| Neuron that conducts impulses toward the CNS from the body periphery |
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Definition
| The brain and spinal cord collectively |
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Definition
| Neuron that conducts impulses away from the CNS to muscles and glands |
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Term
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Definition
| Collection of nerve cell bodies found outside the CNS |
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Term
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Definition
| Contains cell bodies of sensory (afferent) nerves |
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Term
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Definition
| Neuron serving as part of the conduction pathway between sensory and motor neurons |
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Definition
| Specialized supporting cells in the CNS |
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Definition
| Chemicals released by neurons that stimulate or inhibit other neurons or effectors |
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Term
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Definition
| Enclosed, cable-like bundle of axons in the PNS. Provides a common pathway for electrochemical nerve impulses |
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Term
| Peripheral Nervous System |
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Definition
| Ganglia and spinal and cranial nerves; connects the CNS to limbs and organs |
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Term
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Definition
| Junction or point of close contact between neurons |
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Term
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Definition
| A bundle of nerve processes in the CNS |
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Term
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Definition
| Impulse generator and transmitter |
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Term
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Definition
| Secretes neurotransmitters |
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Term
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Definition
| region of the cell body from which the axon originates, it is the area of the cell that generates ATP. This is where the all-or-nothing principle is applied. |
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Term
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Definition
| receptive region of a neuron, as it depolarizes it delivers graded potential to cell body |
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Term
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Definition
| insulates the nerve fibers, allowing for faster transmission of neuronal impulses |
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Term
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Definition
| site of the nucleus and most important metabolic area |
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Term
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Definition
| Essentially rough endoplasmic reticulum, important metabolically |
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Term
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Definition
| Produce myelin, also important in peripheral nerve axon regeneration |
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Definition
| PNS astrocytes that control extra-cell potassium and recycle neurotransmitters |
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Term
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Definition
| gaps in myelin sheath that allow for generation of electrical activity |
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Term
| Chemically gated ion channels (ligand gated) |
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Definition
| These channels open when the appropriate chemical binds to the receptor |
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Term
| Voltage-gated ion channels |
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Definition
| Open and close in response to changes in membrane potentials |
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Term
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Definition
| Always open, help establish resting membrane potential at the optimal value |
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