CLIN PATH - Exam 1

Question 1

A hematocrit is ___.

Answer 1

the PCV, the HCT, the % of RBCs in the blood
(all of the above)

Question 2

A reticulocyte count is not used to assess the bone marrow response to anemia in which species?

Answer 2

horse

Question 3

List 3 things you could see on the blood smear of a patient that would suggest that the patient has a regenerative anemia.

Answer 3

Anisocytosis, polychromasia, reticulocytes, nucleated RBCs, HJ bodies

Question 4

A technician needs to collect 1.5mL of blood. What size syringe should be used to collect the sample?

Answer 4

3mL

Question 5

Which blood components are fragments of the cytoplasm of megakaryocytes?

Answer 5

Platelets

Question 6

true/false: basophilic stipping in RBCs is called by residual RNA and is a common finding in immature RBCs of ruminants

Answer 6

TRUE

Question 7

Basophilic staining RBC inclusions that represent remnants of nuclei are called ___.

Answer 7

Howell-Jolly bodies

Question 8

List one non-biological variable that can create a laboratory error

Answer 8

sampling wrong patient, inadequate ratio of blood to anticoagulant, etc

Question 9

true/false: a non-regenerative anemia is characterized by the presence of reticulocytes

Answer 9

False

Question 10

The primary function of the monocyte is ___.

Answer 10

phagocytosis

Question 11

Which vessel is the preferred blood source for venous blood in most species when a moderate to large amount of blood is needed?

Answer 11

jugular

Question 12

plasma protein is measured and reported in what units

Answer 12

g/dL

Question 13

An animal has a PCV of 60%. How much fluid should be expected from a 10mL sample?

Answer 13

4 mL

Question 14

Blood should be refrigerated if hematologic tests will not be performed within ___ of collection

Answer 14

1 hr

Question 15

avian RBCs differ from canine RBCs in that they ___

Answer 15

have a nucleus

Question 16

A technician is asked to collect a blood sample and perform a manual CBC and cellular morphology analysis. Which is the preferred anticoagulant for the blood collection?

Answer 16

EDTA

Question 17

Leukopenia is defined as ___

Answer 17

a decrease in WBCs

Question 18

These WBCs are characterized by a horseshoe shaped nucleus

Answer 18

band neutrophils

Question 19

A patient with a low MCV on the automated CBC would most likely have ___ RBCs compared to a normal patient

Answer 19

smaller

Question 20

Which of the following would not necessarily be reduced when anemia is present?

Answer 20

WBCs

Question 21

Which of the following types of WBCs always contain granules and are sometimes referred to as segs?

Answer 21

neutrophils

Question 22

the ___ has a segmented nucleus and red or pink staining granules in the cytoplasm

Answer 22

eosinophil

Question 23

what color vacutainer contains EDTA and is used for most hematology tests?

Answer 23

lavender (purple)

Question 24

how is the total magnification of the compound microscope determined

Answer 24

by multiplying the objective lens magnification by the ocular/eyepiece lens magnification

Question 25

which stain is used to visualize reticulocytes

Answer 25

NMB

Question 26

true/false: the PCV is the percentage of whole blood composed of leukocytes

Answer 26

FALSE

Question 27

the ___ measures the average size of RBCs

Answer 27

MCV

Question 28

macrophages may develop from ___ if exposed to a specific cytokine

Answer 28

monocytes

Question 29

list 2 types of centrifuges

Answer 29

clinical horizontal swing arm microhematocrit

Question 30

___ might be seen on the blood smear of a patient with immune-mediated hemolytic anemia

Answer 30

spherocytes

Question 31

after the hematocrit tube is spun down, the buffy coat represent or is composed of

Answer 31

WBCs and platelets

Question 32

which WBCs are characterized by vacuoles in the cytoplasm

Answer 32

monocytes

Question 33

your patient is anemia (PCV reading 18%). your blood smear shows anisocytosis, polychromasia, and nucleated RBCs. this anemia can most likely be classified as ___.

Answer 33

regenerative anemia

Question 34

yellow serum or plasma can be described as

Answer 34

icteric

Question 35

an increase in immature neutrophils is called ___

Answer 35

a left shift

Question 36

if a patient has 75% neutrophils on the differential and the WBC count of 18,000/mcL, what is the absolute number of neutrophils present per mcL

Answer 36

.75 x 18,000 - 13,500/mcL

Question 37

plasma or serum has a milky appearance, what is this called?

Answer 37

lipemic

Question 38

a plasma or serum sample that has a red tinge to it would be described as ___

Answer 38

hemolyzed

Question 39

which nucleated erythrocyte is seen most frequently in peripheral blood smears

Answer 39

metarubricyte

Question 40

true/false: any objective on a microscope may be used with immersion oil

Answer 40

FALSE

Question 41

RBCs forming irreversible clumps on a microscope slide is called ___

Answer 41

agglutination

Question 42

list 4 basic items included on a CBC

Answer 42

RBC count, WBC count, platelet count, reticulocyte count Hb measurement relative WBC counts RBC indices, platelet indices TP, PCV

Question 43

whole blood is composed of fluid and cells. which of the following is the fluid component of whole blood?

Answer 43

plasma

Question 44

this condition is relatively common for the cat. it is a condition where denatured hemoglobin precipitates in the RBCs, known as ___

Answer 44

heinz bodies

Question 45

erythropoietin stimulates RBC production and is primarily produced in certain cells within which organ in the body?

Answer 45

kidney

Question 46

List 4 specific cell types that you can evaluate for on a blood smear

Answer 46

RBC, neutrophil, monocyte, lymphocyte, eosinophil, basophil, band neutrophil, platelet, metarubricyte

Question 47

the refractometer measures ___

Answer 47

USG and plasma TP

Question 48

what is the main difference in the sample preparation between a plasma sample and a serum sample?

Answer 48

clotting

Question 49

a variation in erythrocyte size is known as ___

Answer 49

anisocytosis

Question 50

a differential blood count is performed with the ___ objective on the microscope

Answer 50

100x

Question 51

which term refers to the constant and continual production of RBCs

Answer 51

erythropoiesis

Question 52

the hematocrit is read as the RBCs in whole blood

Answer 52

percentage

Question 53

polycythemia

Answer 53

increase in the number of circulating RBCs

Question 54

leukemia

Answer 54

describes neoplastic cells in the blood or bone marrow

Question 55

lymphopenia

Answer 55

a decrease in the number of lymphocytes

Question 56

pancytopenia

Answer 56

a decreased number of all blood cell types