Microscopy

Question 1

What type of microscope is most often used to identify bacteria and hematology slides?

Answer 1

bright field microscope

Question 2

What type of microscope is most often used to assist in the identification of urine crystals?

Answer 2

polarized microscope

Question 3

What is the objective strength of the eyepiece?

Answer 3

10x

Question 4

What are the most common magnifications of an oil immersion objective?

Answer 4

50x or 100x

Question 5

What type of microscope is used for manual platelet counts?

Answer 5

phase contrast microscope

Question 6

What type of microscope is rarely found in a clinical laboratory?

Answer 6

electron microscope

Question 7

What type is microscope is often used to identify anti-nuclear antibodies (ANA) and acid-fast bacilli?

Answer 7

fluorescent microscope

Question 8

What are the three most common objectives found in the revolving nosepiece of a microscope?

Answer 8

10x, 40x, and oil immersion objective (50x or 100x)

Question 9

What type of microscope might be used to identify tumor markers?

Answer 9

electron microscope

Question 10

What type of microscope is used to identify spirochetes?

Answer 10

dark field microscope;

spirochetes are long, gram negative bacteria associated with lyme disease and syphilis

Question 11

What is the purpose of an iris diaphragm?

Answer 11

used to focus the intensity and size of cone of light

Question 12

What is the proper way to carry a microscope?

Answer 12

by the base and the arm

Question 13

When is the proper time to use the fine focus knob?

Answer 13

when using high power objectives