Cell Block 2: Nerve Tissue
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Created by:
ashleighwhitehead on September 26, 2011
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24 terms
Terms | Definitions |
|---|---|
 glial cells/neuroglia are what kind of cells? | supporting cells, non-conducting cells |
| What term refers to the cell body of a neuronal cell? | Soma/perikaryon (refers to the nucleus and surrounding cytoplasm) |
| What is the term used to describe the ABUNDANT RER in soma/perikaryon of glial cells? | Nissl bodies |
| does the axon hillock have organelles? | NO |
| What does NOT contain Nissl bodies/substance? | Axon hillock |
| how are synaptic vesicles transported? Where are they transported? | to the axon terminal on a system of intermediate filaments and microtubules |
| how are NTs released at the synaptic terminal? | exocytosis |
| Name the 4 types of Glia/Glial cells. | astrocytes oligodendrocytes microglia ependyma |
| how are astrocytes visualized? | GFAP antibodies used for immunocytochemistry to see astrocytes |
| What is GFAP? What does it make up? | glial fibrillary acidic protein composes intermediate filaments |
| what are the two types of astrocytes? | protoplasmic astrocytes fibrous astrocytes |
| Which type of astrocyte is more prevalent in gray matter? In white matter? | protoplasmic astrocytes---gray matter fibrous astrocytes---white matter |
| microglia is derived from what? | monocytes |
| what is the main function of oligodendrocytes? | produce myelin in the CNS |
| Where can you find Ependymal cells? | they line the ventricles of the brain and the central canal of the spinal cord |
| Describe the lining of ependymal cells in the ventricles of the brain and central canal of the spinal cord | they form a single layer of cuboidal to columnar cells with both cilia and microvilli |
| CSF is secreted by what? | choroid plexus |
| what is the origin, location, and function of ependymal cells? | origin-neural tube location-cns fn-line cavities of CNS |
| what is the origin, location, and fn of Oligodendrocytes? | origin-neural tube location-CNS Fn-myelin production |
| What is the origin, location and fn of Astrocytes? | Origin: neural tube Location: CNS Fn: structural, metabolic support; repair; BBB (blood-brain barrier) |
| What is the origin, location, and function of Microglia? | Origin-BONE MARROW Location-CNS Function-macrophage activity |
| Origin, location, and function of Schwann cells? | origin-neural tube location- PNS fn- myelin production in PNS |
| What are the functions of Satellite cells? | 1. help provide controlled microenvironment around neuronal cell bodies of ganglion 2. provide a pathway for metabolic exchanges and electrcal insulation |
| Describe ganglion cell bodies | round with centrally-located nuclei |
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