Page 3 The NeuronDendritesCell body (perikaryon, soma)
Page 5 Support cells (neuroglia)- more abundant than neurons- more mitotic capability
Page 8 Gaps between Schwann cells called nodes of Ranvier
axolemma
Page 9 Myelinated axons: sheath of Schwann and myelin sheathone Schwann cell myelinates a single axonmultiple Schwann cells needed to cover entire length of an axon
Page 10 Oligodendrocytes myelinate CNS axons (if myelinated)
Page 12 Central Nervous System1. brain2. spinal cord
- ganglia associated
Page 13 3. axons project to and from the body (CNS PNS)4. cell bodies in CNS except some in ganglia
Page 15 Transmission1. innervation
- cell body as integrator2. action potentials (impulses)
- axon hillock3. myelin sheath
Page 16 Synapses- presynaptic terminal- postsynaptic terminal- neurotransmitters- ligand-gated ions channels on postsynaptic membrane
Page 18 Gap junction (nexus)- is an electrical synapse
Page 19 Nervous System
Organization of neurons1. circuits for stimulus-response2. exchange of information
Page 20 Neuron signaling1. afferent vs. efferent2. interneurons3. circuits
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Page 33 Anencephaly
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Page 34 Anencephaly
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Spina bifida occulta with meningocoele
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Spina bifida with failure of neuropore closure
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Cortical dysplasia
Page 38 Cortical dysplasia
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