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Surgical Tech 1
Cells, Tissues, and Membranes Terminology
Question | Answer |
---|---|
The smallest structural unit of living matter capabable of functioning independently | Cell |
Group of similar cells arranged with intercellular substance between them specialized to perform a particular function | Tissue |
Surface layer of the cytoplasm of a cell | Cell membrane |
The study of the structure, function, multiplication, and pathology of cells | Cytology |
The central structure of a cell enclosed in a membrane which is essential to cellular fuctions such as reproduction and protein synthesis | Nucleus |
The living matter in all cells which is an organized complex of organic and inorganic substances which are too small for resolution with an ordinary light microscope | Protoplasm |
A membrane which allows some molecules to pass through but not others | Semi-permeable membrane |
A small cavity or space in cell protoplasm containing air or fluid | Vacuole |
Substances such as acid, bases, and salts which in solution conduct an electrical current | Electrolytes |
A relatively stable state of equilibrium | Homeostasis |
Particles move to equalize concentration throughout | Diffusion |
Particles move through a filter or membrane that prevents passage of certain molecules | Filtration |
Solvent molecules pass through a semi-permeable membrane to equalize concentration on each side | Osmosis |
The process of engulfing a solid particle by forming a pocket with the cell membrane | Phagocytosis |
The process of engulfing a liquid particle by forming a pocket with the cell membrane | Pinocytosis |
Acts as a barrier from heat, cold, water loss, and bacterial invasion; aids in secretion and excretion | Epithelial Tissue |
Protects, supports, transports, and bonds the body together | Connective Tissue |
Moves body by contraction/relaxation of pairs | Muscle Tissue |
Conducts impulses throughout the body | Nerve Tissue |
Strands of DNA bearing the genes which carry the hereditary characteristics | Chromosomes |