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12 Cards in this Set
- Front
- Back
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Types of tissues
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Epithelial tissue
Connective tissue Muscle Tissue Nervous tissue |
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Epithelial Tissue
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Covers body surfaces, lines hollow organs, body cavities and ducts; and forms glands
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Connective tissue
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Protects and supports the body and its organs together, stores energy reserves as fat, and provides immunity
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Muscle Tissue
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Is responsible for movement and generation of force
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Nervous Tissue
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Initiates and transmits action potentials (nerve impulses) that help coordinate body cavities
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Three primary germ layers
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Ectoderm, Endoderm,
and Mesoderm |
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Biopsy
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Samples of living tissue removed for microscopic examination, is a chief responsibility of a pathologist. Useful for diagnosis, esp for cancer
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Cell Junctions
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Points of contact between adjacent plasma membranes
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Three functions of cell functions
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1. Some cell functions form fluid-tight seals between cells
2. Other cell junctions anchor cells together or to extra-cellular material 3. Still others act as channels, which allow ions and molecules to pass from cell to cell within a tissue |
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Five most important kinds of cell junctions
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-Adherens
-Junctions -Desmosones -Hemidesmosomes -gap junctions |
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Tight Junctions
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Formed by seblike strands of transmembrane proteins that hold adjacent plasma membranes together. they are common among epitheleal cells that line the stomach, intestines, and urinary bladder
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Adherens Junctions
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Made of plaque, actin microfilaments and cadherins. Holds epitheleal cells together
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