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19 Cards in this Set
- Front
- Back
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neuron
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sense and process information
communicate changes to other neurons sensory and motor neurons |
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glia
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insulates, supports, nourishes neurons
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histology
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study of tissue structure
uses nissl stain |
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nissl stain
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stains the nuclei nissl bodies.
facilitates cytoarchitecture in the central nervous system |
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golgi-stain
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stains soma and neurites.
stains mostly dendrites |
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Ramon y Cajal
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argued with golgi that neurons communicate by contact, not continuity
he prevailed the neuron doctrine |
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soma
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contains cytosol, organelles, and cytoplasm
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axon hillock
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where axon joins cell body
beginning |
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axon proper
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middle part
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axon terminal
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axon tips
no microtubules many synaptic vesicles, membrane proteins, mitochondria |
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difference between axon and soma
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no ER in axon
different proteins |
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synapse
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site of information transfer from one neuron to another
presynaptic --> postsynaptic electrical -> chemical -> electrical |
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axoplasmic transport
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anterograde = soma to terminal. facilitated by kinesin
retrograde = terminal to soma |
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dendrites
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antennae of neurons
site of neuronal computation site of neurotransmitter receptors |
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classifying neurons
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stellate cells or pyramidal cells
sensory/motor/interneurons neurotransmitter type |
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astrocytes
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most glia. influence growth and movement.
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myelinating glia
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oligodendroglia (CNS) and schwann cells (PNS)
node of ranvier |
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microglia
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phagocytes that remove debris
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ependymal cells
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provide lining of ventricle of brain and play role in directing cell migration
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