A&P Study Guide 5

A&P Study Guide 5 - STUDY GUIDE FOR HUMAN A&P 1...

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Chapter 12 1. List and describe the types of support cells of nervous tissue. Astrocytes [CNS] o Found in central nervous system o Anchors neurons to blood vessels o Control environment around neuron Microglia [CNS] o In central nervous system o Acts as macrophage Ependymal cells [CNS] o Line cavities in brain and spinal cord o Form a permeable barrier between cerebrospinal fluid and extracellular fluid Oligodendrocyte [CNS] o In central nervous system o Produce myelin in brain and spinal cord o Helps to insulate o Speeds up signal conduction in nerve fiber Schwann cells [PNS] o In peripheral nervous system o Form myelin sheath around nerve fibers Satellite cells [PNS] o In peripheral nervous system o Found around cell body of neuron o May control chemical environment of neuron 2. Describe the cellular components of nerve cells. Extreme longevity Amitotic High metabolic rate Soma (cell body) o Contains all organelles o May act as receptive surface for signals from other neurons o Most cell bodies are located in the CNS
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A&P Study Guide 5 - STUDY GUIDE FOR HUMAN A&P 1...

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