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Bio 150
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Base
supports the microscope
Substage Light
located in the base
light passes up through the stage and through the specimen
Stage
the platform the slide rests on while being viewed
always has a hole in it to permit light to pass through both it and the specimen
Mechanical Stage
spring clips or clamp style, hold the slide in position for viewing
permits precise movement of the specimen
Condenser
Concentrates the light on the specimen
Best Postion - is close to the inferior surface of the stage
Adjustment Knob
raises and lowers the condenser to vary the delivery of light
Iris Diaphragm Lever
arm attached to the condenser that regulates the amount of light passing through the condenser
Course Adjustment knob
used to focus the specimen
Fine Adjustment Knob
used for more precise focusing
after course focusing is completed
Body Tube (head)
supports the objective lenses which are mounted on the movable nosepiece and the ocular lens
Arm
vertical portion
connects the base and head
Ocular
lens contained at the superior end of the body tube
magnifies the specimen 10x
Objective Lenses
adjustable lens system that permits the use of
low power lens
high powers lens
oil immersion lens
each have different magnifying powers
Relative Lengths
low power 10x yellow band
high power 40x blue band
oil immersion 100x black & white bands
Revolving Nosepiece
when you rotate the low power objective into position -
Turn the course adjustment knob
Moves fast up and down
Turn the fine adjustment knob
moves slow up and down
never use course adjustment knob with high power - will crack the lens
Total Magnification
Specimen beign viewed is equal to the power of ocular lens * the power of the objective lens used
Low Power 10*10= 100x
High Power 10*40= 400x
oil Immersion
Viewing objects through the microscope
when viewing in the microscope - the slide will be upside down
when moved away from you - the image moves toward you
when you slide to the left - image moves right
Parafocal
without touching the focusing knobs
It should be in focus in high power if properly focused in low power
images
in high power - should be larger
1/3 to 1/4 of it should be visible in magnification
Cell
basic structual and functional unit of your body
cuboidal
chondrocryte
muscle
neuron
Tissue
a group of similar looking cells with a common function
epithelium
connctive
skeletal
nervous
Epithelium
covers the body surface, lines its internal cavities and forms glands
Epithelium
cell - cuboidal
tissue - epithelium
Connective
cell - chondrocyte
tissue - connective
Sketeteal
cell - muscle
tissue - skeletal
Nuerons
cell - neuron
tissue - nervous
Author
kbtinker
ID
100541
Card Set
Bio 150
Description
Chapter One
Updated
2011-09-08T20:03:47Z
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