Microscopy

Question 1

scanning lens

Answer 1

The smallest power lens at 4x, used when first locating a specimen. Also useful when viewing large parasites

Question 2

low power lens

Answer 2

At 10x magnification, this lens is useful for viewing parasites found in fecal slides

Question 3

high power lens

Answer 3

40x-50x magnification and are used for small specimens such as urine sediments

Question 4

oil immersion

Answer 4

95x-100x magnification is used with oil to improve resolution when used to view blood smears and bacterial smears such as platelets and yeast

Question 5

ocular

Answer 5

microscope eyepiece, 5x-10x

Question 6

nosepiece

Answer 6

located above the objective lenses

Question 7

objective lens

Answer 7

the lenses attached to the revolving nosepiece

Question 8

base

Answer 8

the stand of the microscope

Question 9

arm

Answer 9

the back support of the microscope

Question 10

light source

Answer 10

located on the base, and under the condensor

Question 11

condensor

Answer 11

located above the light source, some may be adjusted for improved resolution of the slide

Question 12

iris(aperture) diaphram

Answer 12

located below the condensor, controls the amount of light coming up through the condensor

Question 13

light switch

Answer 13

usually located on the side of the base, controls the light source power

Question 14

rheostat

Answer 14

located below the light source on the base, regulates the intensity of the light coming from the lamp or light source.

Question 15

coarse adjustment knob

Answer 15

located on the arm of the microscope and is the larger of the two knobs, used during low power work to move the stage up and down to bring the slide into view

Question 16

fine adjustment knob

Answer 16

located on the arm of the microscope and is the smaller of the two knobs, used to focus slide under high power and oil immersion lenses

Question 17

stage

Answer 17

the platform where the slide is placed

Question 18

stage control knobs

Answer 18

located below and to the right of the stage, direct the stage brackets to move the slide to the right and left and forward and backward