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Cards In This Set
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What two cells types make up the brain?
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Neruons and glial cells.
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What are neurons?
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Neurons have dendrites (which recieve input), a soma (cell body), and have axons (which carry the neural message to other cells).
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What are glial cells?
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Glial cells separate, support, and insulate the neurons from each other and makes up 90% of the brain.
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What is Myelin?
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Myelin insulates and protects the axons of neurons that travel in the body, and speeds up neural messages.
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What are nerves?
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Bundles of axon cables
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What is neurolemma?
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Allows nerves to repair themselves, in teh peripheral nervous system
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First known neurotransmitter.
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Acetylcholine, which stimulates musclesand helps memory formation (curare blocks effects)
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What is GABA?
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Major inhibitory neurotransmitter (realeased when drinking alcohol).
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What is seritonine associated with?
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Sleep, mood, and apetite
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What is dopamine associated with?
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Parkinson's disease and schizophrenia
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What are endorphins?
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Regulators that control our pain response
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What funtions do the spinal cord serve?
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The outter park transmits messages to and from the brain. The inner part controls lifesaving reflexes such as pain response.
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What neruons are involves in spinal cord refelxes?
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Afferent neurons, interneurons, and effernt neurons, forming a simple refelx arc.
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What is teh peripheral nervous system?
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All the neurons and nerves that are not part of the brain and spinal cord and that extend throughout the body.
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What are the two branches of the peripheral ns?
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Somatic and autonomic
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