Ch. 10 Evaluating Blood Smears Flashcards
Eosin stain is used to stain the _______ components of the cells
Basic
eosin stain is acidic
Methyelen blue is used to stain the ______ components of the cells
acidic
methylene blue is alkaline - basic
What is the feathered edge?
the area of the blood smear which contains cells that are greatly distorted and erratically distributed
What is the monolayer?
The area of the blood smear where the cells are evenly and randomly distributed – the area where the blood cell count is done
How are the RELATIVE WBC %s calculated?
By counting the cells on the smear
How are the ABSOLUTE WBC %s calculated?
By multiplying the total WBC count by the relative % of each cell type
What are the 3 main functions of WBCs?
- Phagocytosis
- Release of substances that modulate the immune system
- Production of antibodies
What is the primary function of neutrophils?
Phagocytosis
What is neutrophilia? What does it indicate?
High neutrophil count
Indicates infection or inflammation
In avian/reptile species what cell is equivalent to the neutrophil?
the heterophil
What does a band neutrophil look like?
A neut where the nucleus looks like a horseshoe with large rounded ends
What is the primary function of eosinophils?
modulation of the immune system
What is eosinophilia? What does it indicate?
increased eosinophils
indicates allergic reactions / parasites
What is the primary function of basophils?
Mediation of the immune system
What is basophilia? What does it indicate?
increased basophils
variety of inflammatory and infectious conditions
What is the primary function of lymphocytes?
Producing antibodies
What is lymphocytosis? What does it indicate?
increased lymphocytes
usually indicates viral infection
What is the primary function of monocytes?
Phagocytosis
What is monocytosis? What does it indicate?
increased monocytes
seen in a variety of chronic infections
What do dog RBCs look like?
biconcave discs with area of central pallor
What do cat RBCs look like?
round with little to no central pallor
How do avian/reptile RBCs differ from other animals RBCs?
they are nucleated
what shape RBCs do camelids have?
Oval / elliptical
Platelets are also called ______?
Thrombocytes
