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Lab Practical #1
microscope, tissues, torso
| Question | Answer |
|---|---|
| moves the mechanical stage vertically | upper position, mechanical stage adjustment knob |
| moves the mechanical stage horizontally | lower position, mechanical stage adjustment knob |
| mounted beneath the stage, regulates the amount of light passing through the lens and specimen | iris diaphragm lever |
| hole in the middle of the stage where light passes through the specimen | stage aperture |
| lens which concentrates the light through the stage aperture. Should be set in the highest position for BIOL 1141 | condenser lens |
| lens mounted on the revolving nosepiece | objective lens |
| Magnifying power of three objective lenses | 4x, 10x and 40x |
| holds the objective lenses | revolving nosepiece |
| top lenses of the microscope | oculars |
| Magnifying power of the oculars | 10x |
| Ocular lens x Objective lens | Total magnification |
| scanning objective | 4x objective |
| low power objective | 10x objective |
| high power objective | 40x objective |
| black line that is in a fixed position, viewable through the right ocular | pointer |
| place where the slide is held | mechanical stage |
| knobs that can adjust the position of the mechanical stage | mechanical stage adjustment knobs |
| circle of light that you see through the ocular | field of view |
| allows fine adjustments to the focus of the image | fine focus knob |
| allows larger adjustments to the focus of the image | coarse focus knob |
| changes the focus of the left ocular | ocular focusing ring |
| Controls the intensity of the light through the illuminator | light intensity dial |
| light source for the microscope | illuminator |
| characteristic of microscope that allows for fewer focus adjustments when switching between powers. | parfocal |
| view of the image through the microscope lens compared to the actual image | upside down and backward image, image inversion |
| looking through both eyes | binocular vision |
| four tissue types | epithelial tissue, connective tissue, muscle tissue, nervous tissue |
| specimen is cut transversely | cross-section |
| specimen is cut lengthwise | longitudinal section |
| describes a piece of tissue or organ in a fixative solution that preserves the spatial relationship of cells and their parts | killed and fixed |
| specimen is not cut at a precise right angle | oblique section |
| types of slide preparation | sections, smears, teased preparations, spreads and ground (bone) |
| most common staining method used on slides | hematoxylin and eosin |
| part of h&e stain that stains cell nuclei purple | hematoxylin |
| part of h&e stain that stains cytoplasm and some cytoplasmic products pink | eosin |
| mental picture of a speciman | search image |
| general outline of all tissues on the slide with labels and notes indicating the shape, color, density and major landmarks in the tissue | road map |
| technical errors in slides that cause distortions | artifacts |
| types of artifacts | folds in tissue, wavy sections that are out of focus, crystalline precipitate from incomplete removal of fixative, shrinkage, fractures |
Created by:
pinklrt98
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