WEEK 3 - RED BLOOD CELL MORPHOLOGY Flashcards
ERYTHROCYTES
RED BLOOD CELL
MATURE RBCs SIZE
6.8 - 7.5 micrometers
AVERAGE SIZE OF MATURE RBCs
7.2 um diameter
THICKNESS OF RBC
1.5 - 2.5 micrometers
AVERAGE THICKNESS OF RBC
2um
SHAPE OF RBC
Round, Biconcave disc; discocyte
COLOR AND DIAMETER OF THE CENTRAL PALLOR OF RBC
Salmon Pink with central pallor
( 1/3 of the cell )
Increased variation in the size of the RBCs
Anisocytosis
Normal size of RBC
Normocytic
Smaller Size of RBC
MICROcytic
Larger Size of RBC
MACROcytic
Discocyte
Normocytic
smaller than the normal size of RBC
MICROcytic
associated with decreased hemoglobin
synthesis
MICROcytic
MEANING OF ATIS
Anemia
Thalassemia
Iron deficiency anemia
Sideroblastic anemia
larger than normal RBCs
MACROcytic
resulted from a defect in either nuclear
maturation or stimulated erythropoiesis
MACROcytic
disease that can be seen in
rbc size: microcytic
ATIS
disease that can be seen in
rbc size: macrocytic
Megaloblastic Anemia
mature
erythrocyte that have a shape other than the its
normal shape
Poikilocytosis
SHAPE: lacks central pallor
Spherocyte
SHAPE: deficient in spectrin protein
Spherocyte
SHAPE: Associated with hereditary spherocytosis, G6PD
Spherocyte
SHAPE: Decreased surface volume ratio
Spherocyte
SIZE: smaller, lower MCV
Microcytic
SIZE: larger, higher MCV
Macrocytic
average range of mean corpuscular volume?
80 - 100 fL
tests that can evaluate the size variation of RBC
- PBS (Peripheral blood smear)
- RBC INDICES RESULTS: MCV, MCH, MCHC
- RDW
refers to how much surface area is available compared to the cell size
Decreased surface volume ratio
SHAPE: known as ovalocyte
ELLIPTOCYTE
SHAPE: caused by defects of red cell membrane
proteins
ELLIPTOCYTE
SHAPE: appears cigar to egg shaped
ELLIPTOCYTE
SHAPE: seen in Hereditary Elliptocytosis,
Megaloblastic anemia, Thalassemia
ELLIPTOCYTE
SHAPE: target cells, leptocytes
CODOCYTE
SHAPE: darkly stained at the center with light
outer rim
Codocyte
SHAPE: surface volume to ratio is excessive;
increased
CODOCYTE
SHAPE: crenated cell/sea urchin cell
Echinocyte
SHAPE: has regular spicules (consistent)
Echinocyte
SHAPE: caused by imbalance in the osmotic
pressure within the cell
Echinocyte