Exercise 1: Learning the Microscope Flashcards
The working parts of a microscope are supported by…
A strong frame consisting of the head, arm and base.
The safe parts to hold when carrying the microscope are…
The base and arm.
Head of Microscope
- Upper part of frame
- Supports lenses.
- Also called body tube.
Arm of Microscope
- Vertical part of frame.
2. Connects head and base.
What is the rheostat on a microscope?
- Adjusts intensity of light.
2. Also called the light intensity knob.
Base of microscope.
- Bottom part of frame
2. Contains light source.
Light source of microscope.
- Found within the base.
2. Illuminates the specimen.
Objective Lenses
Four strengths ~Scanning lens (4x magnification) ~Low power lens (10x magnification) ~High power lens (40x magnification) ~Oil immersion (100x magnification)
Ocular Lens
- The eyepieces.
2. 10x magnification.
Revolving Nosepiece
- Supports objective lenses
2. Rotates to change objective lens.
Side Clips
Holds slide in place on stage.
Mechanical Stage
Platform for slide to sit on.
Mechanical Stage adjustor Knob
Moves stage forward, back, left or right
Fine focus knob
Used for precision focusing.
Coarse focus knob
Raises or lowers the stage.
Iris Diaphragm
- Adjusts contrast
2. Opens and closes to regulate the amount of light reaching the condenser.
Condenser
- Lens below the stage
2. Concentrates light onto the specimen.
Relationship between magnification and field of view.
The greater the magnification of a lens, the closer it to the slide, so the field of view is smaller and the image appears larger.
Field of view for the scanning lens
Highest field of view and the smallest image.
Field of view for the low power lens
Intermediate size field of view and intermediate size image.
Field of view for the high power lens
Smallest field of view and largest image
Cytology
The study of cells.
Ocular lens
Eyepieces
Field of View
Area of slide visible
Head
Supports lenses
Stage
Flat platform for slides
Scanning lens
Has 4x magnification
Arm
Vertical part of microscope frame
Nosepiece
Rotates to change objective lenses.
Histology
The study of tissues.
Base
Bottom of microscope frame.
Slide Clips
Holds slide onto stage.
Light Source
Illuminates the specimen
Iris Diaphragm
Adjusts contrast
Simple microscope
Has a single lens
Condensor
Lens below the stage
High power lens
Has 40x magnification
Fine focus knob
Used for precision focusing
Compound Microscope
Has a series of lenses
Coarse focus knob
Raises or lowers stage
Low power lens
Has 10x magnification
Lens paper
Used to clean lenses
Gross anatomy
Large enough to see with the naked eye.
Anatomy & Physiology labs typically use the ____ microscope.
Compound light.
Which of the following is NOT part of the microscope frame?
Arm
Base
Stage
Head
Stage
Another name for the rheostat is _____?
Light intensity knob.
The ____ supports the objective lenses.
Revolving nosepiece
The ____ is a stage for slides
Mechanical stage
The iris diaphragm changes the
Amount of contrast
When the high power lens is in place, the total magnification of the microscope is?
400x
The field of view is largest when the ____ lens is being used
Scanning power.