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11 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Cell body/ centron |
Contains a nucleus amd granular cytoplasm |
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Cytoplasm |
Granular, contains many ribosomes |
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Nucleus |
Contains DNA |
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Nissl granules |
Cytoplasmic granules comprised of ribosomes grouped on rer |
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Dendrite |
Thin fibre carrying impules towards cell body. |
Can have several dendrites |
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Axon |
Thin fibre carrying impulses away from cell body. |
Cell body only has one axon |
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Schwann cells |
Surrounds and supports nerve fibres. Invertebrate embryos, wrap around developing axons and withdraw cytoplasm leaving multiplayered phosolipid myelin sheath. |
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Myelin sheath |
Electrical insulator. Speeds up transmission of impulse. |
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Nodes of ranvier |
1micromtr gaps in sheath. Impulses transmitted rapidly |
Adjacent schwann cells meet and axon membrane is exposed |
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Synaptic end bulb |
Swelling at end of axon Neurotransmitter is synthesised |
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Axon ending/ terminal |
Secretes neurotransmitter Transmits impulse to adjacent neurone. |
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