Chapter 15: Diagnostic Techniques

Question 1

Which of the following terms means to predict the outcome of a disease?
A- Diagnosis
B- Prognosis
C- Health surveillance
D- Etiology

Answer 1

B- Prognosis

Question 2

What is the primary evaluation procedure used to determine if an animal has an ectoparasite infestation?

Answer 2

A gross visual examination

Question 3

In dogs, adult heartworms are found most often in the ________________ and the right ventricle of the heart.

Answer 3

Pulmonary artery

Question 4

Which diagnostic test is based on the fact that nematode larvae Willa cumulate at the bottom of a funnel?
A- Direct smear
B- Fecal flotation
C- Fecal sedimentation
D- None of the above

Answer 4

C- Fecal sedimentation

Question 5

Smears can be used to determine the presence of endoparasites in which of the following samples?
A- Feces
B- Sputum
C- Blood
D- All of the above

Answer 5

D- All of the above

Question 6

What test is used to determine mites?

Answer 6

Skin scraping

Question 7

What happens in a fecal sedimentation?

Answer 7

Larvae sink to the bottom

Question 8

What happens in a fecal floatation?

Answer 8

Eggs come to the surface

Question 9

What test determines some species of pinworms?

Answer 9

Cellophane tape technique

Question 10

What disease does yellow plasma indicate?

Answer 10

Jaundice

Question 11

What is specific gravity used to determine?

Answer 11

Dehydration

Question 12

What is observed when anemia is present?

Answer 12

Low hematocrit

Question 13

What makes up the buffy coat?

Answer 13

White blood cells

Question 14

What test is anticoagulated blood used for?

Answer 14

CBC

Question 15

What test is used to detect antibodies?

Answer 15

Serology

Question 16

The measurement obtained when you perform a hematocrit represent:
A- the number of cells
B- an average cell volume
C- a percentage
D- none of the above

Answer 16

C- a percentage

Question 17

In most species, which type of white blood cells are the most numerous?
A- Neutrophils/heterophils
B- Lymphocytes
C- Eosinophils
D- Monocytes

Answer 17

A- Neutrophils/heterophils

Question 18

The presence of parasites and allergic reactions are two conditions that often cause an elevation n the numbers of which white blood cells?
A- Neutrophils
B- Lymphocytes
C- Eosinophils
D- Basophils

Answer 18

C- Eosinophils

Question 19

Which test gives information on blood cell morphology?
A- Erythrocyte count
B- Packed cell volume
C- Peripheral blood smear
D- Hematocrit

Answer 19

C- Peripheral blood smear

Question 20

True or False
Clinical serum chemistries are tests that determine the chemical composition of the blood cells.

Answer 20

False

Question 21

What is the difference between plasma and serum?

Answer 21

Plasma is the noncellular portion of whole blood (unclotted). Serum is the liquid obtained from blood that has been allowed to clot

Question 22

Which of the following best describes blood plasma?
A- Whole blood
B- Unclotted blood
C- The liquid portion of unclotted blood
D- The liquid portion of clotted blood

Answer 22

C- The liquid portion of unclotted blood

Question 23

Measuring an antibody titer can give information about: (choose all that apply)
A- Active infection
B- Past infection
C- Number of times the animal has been exposed to a pathogen
D- Period of time elapsed since the last exposure to the antigen

Answer 23

A- Active infection
B- Past infection

Question 24

True or False
The best way to obtain a sterile urine sample is to use a catheter inserted in the urethra of the animal.

Answer 24

False

Question 25

Examination of skin mucus taken from aquatic species under a microscope is also known as:
A- Differential
B- Direct smear
C- Wet mount
D- Tape test

Answer 25

C- Wet mount

Question 26

True or False
To examine the urinary sediments, the urine should be left undisturbed for several hours before being stained.

Answer 26

False

Question 27

Hematology can assist the technologist in diagnosis of which of the following health problems?
A- Anemia
B- Dehydration
C- Infection
D- All of the above

Answer 27

D- All of the above

Question 28

Why can’t viruses be co-identified with bacteria if inoculated on the same agar plate?

Answer 28

Viruses do not grow on artificial media

Question 29

True or False
An examination of the animal’s cage should be part of the development of the case history of the animal being necropsied.

Answer 29

True

Question 30

Why should the carcass of an animal never be frozen before necropsy?

Answer 30

Because the formation of ice crystals will disrupt the cell structures and will make tissue examination impossible

Question 31

True or False
X-rays can penetrate through most body tissues.

Answer 31

True

Question 32

True or False
Infared radiation is emitted from all objects.

Answer 32

True

Question 33

Which of the following is an example of a contrast medium/
A- Cadmium
B- Luciferin
C- Bilirubin
D- Gadolinium

Answer 33

D- Gadolinium

Question 34

In dorsoventral recumbency, which part of the animal do the x-rays strike first?
A- The back
B- The flank
C- The belly
D- The head

Answer 34

A- The back

Question 35

True or False
Physiological control is important during diagnostic imaging to prevent the introduction of artifact.

Answer 35

True

Question 36

Which method would you want to use to follow in real time the progress of a catheter from a peripheral blood vessel to the heart?
A- Standard radiography
B- Computed tomography
C- Fluoroscopy
D- Magnetic resonance imaging

Answer 36

C- Fluoroscopy

Question 37

Which of the following techniques uses a radioisotope to provide images of in vivo biological princesses?
A- Fluoroscopy
B- Ultrasound
C- Magnetic resonance imaging
D- Positron emission tomography

Answer 37

D- Positron emission tomography