Hematology #1

Question 1

All blood tubes have a type of anticoagulant in them.

Answer 1

False

Question 2

A clean stick is only necessary for routine blood work before anesthesia.

Answer 2

False - a clean stick should be sought after at all times.

Question 3

WBCs are generally larger than RBCs

Answer 3

True

Question 4

Platelets are considered a piece of another cell with multiple nuclei

Answer 4

False

Question 5

WBCs mainly do their job in the blood stream

Answer 5

False

Question 6

A LTT blood tube is used for a CBC test

Answer 6

True

Question 7

Blood gases would use a GTT

Answer 7

True

Question 8

Chemistries and Serology would use a SST for blood collection?

Answer 8

True

Question 9

Coagulation tests would use a BTT tube

Answer 9

True

Question 10

What % of plasma is water?

Answer 10

93%

Question 11

What is the largest of the WBCs?

Answer 11

Neutrophil

Question 12

Production of blood cells within the bone marrow is called

Answer 12

Hematopoisis

Question 13

What is the term for a decrease in WBCs

Answer 13

leukopenia

Question 14

Term for an increase in WBCs

Answer 14

Leukocytosis

Question 15

What type of WBC would be increased in an animal with allergies?

Answer 15

Eosinophils

Question 16

Terms used to describe RBC color?

Answer 16

Normochromic, Hyperchromic, Hypochromic, Polychromasia,

Question 17

Terms to describe RBC size

Answer 17

Anisocytosis, Macrocytes, Microcytes,

Question 18

Which WBCs are granulocytes?

Answer 18

Neutrophil, Basophil, Eosinophil

Question 19

What is the difference between plasma and serum?

Answer 19

Plasma contains clotting factors, serum does not.

Question 20

Which of the WBC is most predominant in cats and dogs?

Answer 20

Neotrophil

Question 21

What does the acronym IMHA stand for?

Answer 21

Immune-mediated hemolytic anemia

Question 22

What can cause this condition?

Answer 22

They are a major morphologic feature in dogs with hemangiosarcoma (often accompanied by regenerative anemia).

AKA - Spur cells

Question 23

What is this called?

Answer 23

Red cells adhere to each other in grape-like clusters because they have been coated with antibodies.
Strongly suggestive of IMHA or erythroparasites

Question 24

What is this condition and how is is caused?

Answer 24

• Babesia Canis
• Caused by a parasite
• Causes anemia, jaundice, fever, V/D
• Transmitted by many ticks, Dermacentor and Rhipicephalus are examples

Question 25

What is this called?

Answer 25

• Basophilic Stippling
• Retained RNA in the cytoplasm
• Appears as purple dots

Question 26

What is this called?

Answer 26

• Blister cells
• Membrane weakens
• Sometimes seen with liver dz
• Usually rupture to form Keratocytes

Question 27

What is this called?

Answer 27

Echinocytes

• Spiculated RBC’s.

Causes

• Artifact: aging blood or excessive exposure to EDTA
  Natural: observed in dogs with renal disease or rattlesnake envenomation.

Question 28

What is this called?

Answer 28

Heinz Body

• Small round projection from the cytoplasm (On the cytoplasm not in it)
• Usually small and hard to find
• The result of oxidation and denaturation of hemoglobin
• Causes membrane to protrude

Question 29

What is this called?

Answer 29

Howell-Jolly body

• Nuclear fragments
• Appear as small round dots
• Usually only one per cell
• Normal to see these occasionally

Question 30

What morphology does this show?

Answer 30

Keratocytes

• Formed from physical or chemical injury to red cells. (“Helmet” shape, crescent moon,)
• They can be seen with liver disease in cats such as hepatic lipidosis.
• Can occur secondary to:
  Oxidative damage
  Iron deficiency