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21 Cards in this Set
- Front
- Back
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The Blood-Brain Barrier |
-chemical protection -prevents toxic substances from entering the brain. -tightly packed |
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Physical Protection of the Brain |
-Skull -Meninges Cerebrospinal Fluid (CSF) |
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3 parts of the Meninges |
-Dura Mater -Arachnoid -Pia Mater |
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Dura Mater |
-Tough (leathery) top part that is fully formed at birth. |
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Arachnoid |
-looks like a web (thinner than the Dura Mater) -contains the Subarachnoid space which contains cerebral spinal fluid |
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Pia Mater |
-very thin -covers every fisher tracks fold -renewed constantly (3x a day) |
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Ventricles |
-hollow spaces in the brain filled with cerebral fluid (protects the brain by acting as a cushion) |
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Sympathetic Nervous System |
-synapse far away from the organ -fight or flight |
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Parasympathetic Nervous System |
-synapse quite close to the organ -rest and digest |
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Afferent Nerves |
-sends messages to the brain |
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Efferent Nerves |
-the brain sends messages to the rest of the body |
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Central Nervous System |
-Brain Spinal Cord |
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Peripheral Nervous System |
-Somatic Nervous System -Autonomic Nervous System |
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Somatic Nervous System |
-conscious control |
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Autonomic Nervous System |
-unconscious control -heart beat, blood pressure, breathing -autopilot |
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Types of Glial Cells |
-Oligodendrocytes -Schwann Cells -Microglia -Astrocytes |
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Glial Cells |
-same number as neurons -communicate on their own while also regulating what a neuron does. -keeps synapse insulated |
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Oligodendrocytes |
-located in the central nervous system -insulates axons -larger (insulates more than one axon) |
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Schwann Cells |
-located in the PNS -also insulates axons -smaller, but wraps whole body around the axon |
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Microglia |
-responds to damage and disease -to the area to help with cleanup -starts the process of inflammation |
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Astrocytes |
-star-shaped -structure of neuron -communication -controlling the synapse -largest of the glial cells |
