ANAPHY LAB Flashcards
lens closest to your eye is an ____________
Ocular Lens
holds the ocular lens in place
Body Tube
magnification of ocular lens
10x
each set of lens is attached to the ___________________
Revolving Nosepiece
is used for initial location of the specimen
Scanner
magnfication of scanner
4x
may also be used for initial location of the specimen. it is also used for observing specimens that do not need greater magnification
Low Power Objective
magnification of low power
10x
is used for specimens requiring greater magnification.
High Power Objective/ High Dry Objective
This objective lens is called __________________ because it does not require the use of oil.
Dry Lens
is determined by multiplying the power of the ocular lens by the power of the objective lens in use.
Total Magnification
2 Characteristics of Microscope
Resolving Power/ Resolution
Magnification
The specimen is usually mounted on a glass or plastic ___________________
Microscope Slide
A platform just below the objective lens
Stage
A stage that has an adjustable bracket that moves the slide around the mechanically, it is called the ____________________
Mechanical Stage
is located below the stage. Provides light to the specimen mounted on the slide, and then through the objective and ocular, to the eye
Lamp/ Illuminator
a lens that concentrates the light, maybe fond between the lamp and the stage
Condenser
light intensity may be adjusted by adjusting the _______________ just below the stage
Diaphragm
is a rotating disk with holes of different diameters.
Disk Diaphragm
is made of overlapping slivers of metal in a pattern resembling the iris flower
Iris Diaphragm
The entire assembly of the microscope is held in an upright assembly called the ______
Arm
The scope is supported by a square or horse-shoe shaped ________
Base
The arm maybe connected to the base by a _________
Pivot
The _________________ adjusts the distance very little
Fine- Adjustment Knob
The _________________ adjusts the distance greatly
Coarse- Adjustment Knob
Most images are _______________, which means that the image remains focused when you change the objective lenses.
Parfocal
is a slide on which a wet specimen is placed, then covered with a cover slip
Wet-mount Slide
are used to make the specimen, or some parts of it visible.
Stains
two basic functions of Epithelial Tissue
- Covering/ Lining
- Glands
The non free space of the epithelial tissue is attached to the underlying connective tissue by the ______________________
Basement Membrane
is a thin, glue like layer that hold the epithelium in place while remaining highly permeable to water and other substances.
Basement Membrane
glands that secrete substances into ducts that empty unto epithelial surfaces
Exocrine Glands
glands that secrete substances that diffuse into the bloodstream
Endocrine Glands
2 Classifications of Epithelial Tissues
- Number of Layers
- Morphology
Number of Layers
- Simple
- Stratified
- Psuedostratified
includes all tissues that have one layer of cell
simple
includes all epithelia with more than one layer (stratum) of cells
Stratified
Shaped like fish scales, these cells are much wider than they are tall when viewed in a cross section.
Squamous
about as tall as they are wide
Cuboidal
these are taller than they are wide
Columnar
looks as if it is stratified but it is only one layer deep
Pseudostratified
other name of pseudostratified columnar?
False Stratified
refers to the fact that these cells change shape as the need arises, being stretched or compressed into any of the three shapes already existing
Transitional
are short, hair-like projections from each cell’s free surface that propel material along the epithelial surface.
Cilia
upper layers of the cells are dead and filled with a tough, waterproof material
Stratified Squamous Keratinized
what is the tough, waterproof material made of?
Keratin