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A&P Lab 1-3
1)Microscope 2)Cell Permeability 3)Classification of Tissues
| Question | Answer |
|---|---|
| Total Magnification | Ocular lens x Objective lens |
| Resolution | ability to discriminate two close objects as separated |
| Working Distance | distance from the slide to the bottom of the objective lens. |
| Field Diameter | diameter of the circle of light you see through the microscope |
| Aperture | the opening of lens (1mm=1000um) |
| Depth of field | how deep you can see into a specimen from top to bottom |
| Real Image | image projected from the objective lens to the ocular lens |
| Virtual Image | image projected from the ocular lens to your eyes |
| Parfocal | the slide should be in focus at the higher mag. once you have properly focused. In focus with one objective lens, in focus with all objective lenses. |
| Tissue | groups of cells that work together to perform a specific function |
| List 4 primary tissues | 1)epithelial tissue 2)muscular tissue 3)nervous tissue 4)connective tissue |
| Epithelial Tissue | covering + lining |
| Muscular Tissue | Contracts |
| Nervous Tissue | transmits signals around the body |
| Connective Tissue | binds structures together |
| Histology | the study of tissues |
| Exocytosis | out of the cell; exit |
| Endocytosis | into the cell; enter |
| Dialysis | separation of substances by diffusion through selectively permeable membranes |
| Passive Processes | require no energy |
| Active Processes | are driven by energy from ATP |
| Diffusion | tendency of molecules to move from an area where they are in higher concentration to an area where they are lower concentration. |
| Net Movement | more molecules moving in one direction than in any other direction |
| Speed of diffusion is affected by | a. size-small molecules move faster b. temperature- molecules move faster at higher temperatures |
| Simple Diffusion | no carrier molecules, does not require ATP to drive it, follow the concentration gradient -small molecules -lipid molecules -lipid soluble substances |
| Osmosis | diffusion of a solvent (water), no carrier molecules, does not require ATP to drive it, follow the concentration gradient of the solvent (water). |
| Osmotic Pressure | the attraction of solute particles for water. |
| Hypertonic | a solution with a higher concentration of non-penetrating solutes than another solution |
| Hypotonic | a solution with a lower concentration of non-penetrating solutes than another solution |
| Isotonic | a solution with the same concentration of non-penetrating solute as another solution |
| Active Transport | carrier molecules, requires ATP to drive it, transports substances against the concentration gradient. |
| Vesicular Transport | requires ATP to drive it, large particles move across the plasma membrane. (exocytosis, endocytosis) |
| Squamous | flat |
| Cuboidal | cube shape |
| Columnar | cell is much taller than they are wide & deep |
| Characteristics of Connective Tissue | -all kinds develop from mesenchyme -the bulk of the tissue is extracellular matrix |
| Crenation | cell shrinks |
| Lyse | cell bursts |
Created by:
Greenpeas
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