lab#1 microscopy & epithelial tissue lama alabdi supervised by: dr. reem alajmi
DESCRIPTION
Lab#1 Microscopy & Epithelial Tissue Lama AlAbdi Supervised by: Dr. Reem AlAjmi. Microscope. Genera!y , It is an instrument used to examine and monitor objects we can’t see with the naked eye. It has many applications. Types of microscopes. - PowerPoint PPT PresentationTRANSCRIPT
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Lab#1Microscopy
&Epithelial Tissue
Lama AlAbdiSupervised by: Dr.
Reem AlAjmi
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Genera!y, It is an instrument used to examine andmonitor objects we can’t see with the naked eye.It has many applications.
Microscope
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There are different classes and types of microscopes dependingon the magnification power, their applications, and how theyare operated:Transmission electron microscope (TEM).Scanning electron microscope (SEM).Inverted microscope.Light (compound) microscope.
Types of microscopes
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The compoundmicroscope is made of 3systems:The mounting andmovement System.The magnificationSystem.The i!umination System.
Compound Microscope
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The mounting and movement system
The body tube:carries the ocular lensesThe arm:Supports and connects theupper part of the microscope
The coarse focusing knob:for stage movementThe fine focusing knob:for image sharpness
The nose piece:Carries the objective lenses andmove them accordingly above thestageThe stage:Horizontal platform upon whichthe slide of interest restThe base:
Supports the microscope
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The ocular lenses:5X, 10X, and 15X
The objective lenses:Scanning lens: 3.5X or 4X or 5XLow power lens: 10XHigh power lens: 40XOil immersion lens: 100X
THE MAGNIFICATION SYSTEM
How to calculate the magnification power?Magnification power = ocular lens xobjective lens.(e.g.) 10X x 40X = 400X hint: Don’t forget the unit
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THE ILLUMINATION SYSTEM
The illuminator:light source
The iris diaphragm:controls the amount of lightreaching the slide
The condenser:collects and concentrate the light
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THE EPITHELIAL TISSUE
Prepared by : Reem Aldossari
Lab 2ZOO 103
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Types of Epithelial Tissue
•Epithelial tissue can be divided into two groups depending on the number of layers of which it is composes.
simple epithelium: which consist of only
one layer
squamous epithelium
cuboidal epitheliu
m
columnar epithelium
StomachIntestineCollecting tubule
Thyroid gland
Lining of MouthTop view
Bowman’s capsuleSide view
stratified epithelium:
which consist of more than
one layer( Squamous,cubo
idal,columnar)Skin of Toad
( Frog )
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Covering “surface” epithelium
.
Glandular
epithelium
Neuro_epithium
Types of Epithelial Tissue
•The Simple.•Stratified.
epithelium of cells
specialized to
produce secretion.
(Goblet cell)
•Epithelial tissue can be divided into two groups depending on their function of which it is composes.
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Squamous epithelium
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Simple Cuboidal Epithelium
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Simple Columnar Epithelium
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1
2
Glandular Epithelium
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Stratified sequamous epithelium in skin keratinized and non keratinized
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Stratified cuboidal epithelium in sweat gland
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Thank you for your attention