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17 Cards in this Set
- Front
- Back
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Tissue |
Collections of specialized cells and sell products that carry out a limited number of functions |
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Histology |
The study of tissues |
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Epithelial tissue |
Covers exposed surfaces, lines internal passageways and chambers, and forms glands |
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Connective tissue |
Cells internal spaces, provide structural support for other tissues, transports materials within the body, and the stores energy. |
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Muscle tissue |
Specialized for contraction and includes the skeletal muscles of the body, the muscles of the heart, and the muscular walls of hollow organs. |
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Nervous tissue |
Carries information from one part of the body to another in the form of electrical impulses. |
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4 types of tissues |
1) Connective tissue 2) Muscle tissue 3) Nervous tissue 4) Epithelial tissue |
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Epithelia |
Layers of cells that cover external or line internal surfaces |
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Glands |
Structures that produce fluid secretions. |
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Functions of Epithelia |
1) Provides physical protection 2) Controls permeability 3) Provides sensation 4) Produces specialized secretions |
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Characteristics of Epithelial Tissue |
1) Polarity 2) Cellularity 3) Attachment 4) Avascularity 5) Regeneration |
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Polarity |
The presence of structural and functional differences between the exposed and attach to surfaces. |
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Avascular |
Lacking blood vessels |
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Apical Surface |
Where the cells exposed to an external or internal environment |
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Basolateral Surface |
The base of a cell when attaches to underlying epithelial cells or deeper tissues, and the sides, where the cell contacts its neighbors |
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Microvilli |
None-motile projections that greatly increase the surface area of the cell exposed to the extra-cellular environment |
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Cilia |
Long, slender extensions of the plasma membrane. Primary cilium: Acts as a signal sensor, detecting environmental stimuli and coordinating activities such as embryonic development and homeostasis at the tissue level Motile Cilia: beat rhythmically to move fluids or secretions across the cell surface |
