Term
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Definition
| information processing, communication |
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Term
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Definition
- cells in the nervous system that support the activities of neurons
- outnumber neurons by a number of 10-50 : 1 |
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Term
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Definition
- a small structure within a cell that carries out a specific function
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Definition
| the main mass of a neuron, containing the nucleus and many organelles |
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Definition
| responsible for carrying signals to other neurons |
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Definition
| receives information from other neurons |
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Term
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Definition
a protein structure embedded in a cell membrane that allows ions to pass without the use of additional energy
-voltage
-ligand
- g protein |
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Term
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Definition
protein structure embedded in a cell membrane that uses energy to move ions across the membrane
-sodium potassium pumps
- calcium pumps |
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Term
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Definition
- a network of filaments that provides the internal structure of a neuron
-microtubules (25)
- intermediate filaments (neurofilaments, 10 nm)
- the most important strucural support in axons
- actin filaments ( microfilaments, <10 nm)
- important for axon growth
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Term
| The Penrose-Hameroff hypothesis |
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Definition
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Term
| classification of neurons |
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Definition
- multipolar
- bipolar
- unipolar |
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Term
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Definition
- most common in brain, near spinal cord
- Somatosenses: transmits touch, temperature, pain
- Autonomic system: directs glands and organs
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Term
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Definition
-processing in early sensory systems
- located in retina, cochlea, olfactory bulb, tongue
- transmits information in several sensory systems
- provides fasts, intuitive assessments of complex situations
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Term
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Definition
- some neurons in spinal cord
- located in cerbral cortex, cerebellum, and spinal cord with axons extending to muscles and glands
- carries commands to muscles and glands
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Term
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Definition
| large glial cells including astrocystes, oligondendrocytes, and schwann cells |
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Term
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Definition
-support neurons
-structural support
- blood brain barrier (BBB) |
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Term
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Definition
| insulate axons in the central nervous system |
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Term
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Definition
| - insulate axons in the peripheral nervous system |
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Term
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Definition
| - cells of the brain's own immune system |
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Term
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Definition
| in electrical synapses, channels connecting the two neurons across a synaptic gap of only 3.5 nm allow for the direct movement of ions from on cell to the other. Electrical synapses have the advantage of nearly instantaeous communication between neurons |
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