click below
click below
Normal Size Small Size show me how
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 |