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21 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Tissue |
A group of similar cells specialiazed to perform a common function derived from the three primary germ layers |
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Histogenesis |
Differentiation of the three primary germ layers into tissues |
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Four chief types of tissues |
Epithelium, connective tissue, muscular and nervous tissue |
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Epithelium |
Derived from the three germ layers ( ecto, meso, endoderm ). Composed of one or more layers of continuous cells with scanty intercellular substance. Lines external/internal surface |
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Connective tissue |
Mesoderm |
Originate |
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Muscular tissue |
Mesoderm |
Originate |
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Nervous tissue |
Ectoderm |
Originate |
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Basic tissue components |
Cells, intercellular substance, fluids |
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Intercellular substance |
Ground substance, matrix |
Components |
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Fluid Component of Tissue |
Plasma, lymph, csf, tissue fluid |
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Germ Layers |
Ectoderm, mesoderm, endoderm |
3 |
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Other terms for intercellular substance |
Ground substance, cementing substance |
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Basement membrane |
Anchors epithelium to the underlying connective tissue |
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Lamina propria |
Underlying connective tissue that the basement membrane is connected to |
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Functions of Epithelium |
Protection, absorption, secretion, sensory reception, excretion |
PASSE |
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True or False: epithelium is vascular |
False. Epithelium is avascular |
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Avascular |
Lacks blood supply Epithelium has many nerve fibers. Nutrients diffuse through underlying capillary bed |
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Metaplasia |
Transformation of one tissue into another |
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Epithelial cells |
Nucleus- conforms to cell shape With cytoplasm Manifest polarity |
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Indications of Polarity ( distal & basal ) |
Distal - filamentous mitochodria, secretory granules, centrioles, golgi apparatus Basal - granular mitochondria, chromidial substance, nuclei of columnar cells |
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Classification of Epithelium |
Cell layers - simple, stratified Shape- squamous, cuboidal, columnar |
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