Rules of
Scientific
Diagrams
How to Draw Microscopic Images
Learning Intentions
By the end of this lesson you should be able to:
 Explain how an electron microscope is different to
a light microscope
 Define the terms magnification and resolution
 Convert units of measurement used in microscopy
 Draw fully labelled cellular diagrams
Complete the
worksheet provided
Light Microscopes
Light rays are focussed using
glass lenses to magnify objects
up to x1500
Eyepiece
lens
Coarse and fine Focusing
Objective lenses
Stage
Stage clips
Diaphragm
Mirror
Compound Light
Microscope
Compound
Microscope
Rules of Scientific Diagrams
Each diagram MUST include:
 Title
 Magnification
 Date
 Detail
 Labels
 Each diagram MUST:
 Be drawn on a blank paper
 Be drawn in pencil
 Be at least 10 cm in diameter
 Be professional (e.g. lines drawn with rulers)
Lets Practice Microscopic Drawing
Draw the cellular structure identified in the circle (ocular lens). Ensure that the diagram is fully labelled.
Lets Practice Microscopic Drawing
Draw the following diagram
To Do Now:
 Draw 2 Different types of cells that you find
under the microscope.
TO FOCUS MICROSCOPE:
 Start on smallest power lens, focus in on cell.
 Go to medium power and focus
 Go to high power and focus if possible.
Epithelial Layer of a Urinary Bladder.
Cross Section Leaf Structure
mucous acini has nuclei at the periphery
whereas serous acini has nucleus in the
centre if the cells surrounding the lumen.
Mucous acini usually stain pale, while
serous acini usually stain dark
A fibrocyte is an inactive mesenchymal cell, that is, a
cell showing minimal cytoplasm, limited amounts of
rough endoplasmic reticulum and lacks biochemical
evidence of protein synthesis.
1.mesenchyme
a loosely organized, mainly mesodermal embryonic
tissue which develops into connective and skeletal
tissues, including blood and lymph.
Goblet cells are simple columnar
epithelial cells that secrete gelforming mucins,
Epithelial Cells