1. Blood Histology

2. Erythrocytes: Red blood cells. Do not have a nucleus or organelles
Erythrocytes: Red blood cells. Do not have a nucleus or organelles. Filled with hemoglobin. Platelets: fragments of a larger cell, the megakaryocyte, that act in blood clot formation.
erythrocyte
platelets

3. Neutrophil- granulocyte
Polymorphonuclear: nucleus has many lobes separated by threads of chromatin.
Most abundant in blood, phagocytic & mobile

4. Eosinophil- granulocyte
Granules stain pink or orange (from the stain eosin)
Bi-lobed nucleus
Anti-parasite

5. Basophil- granulocyte
Dark blue staining cell. Cytoplasm filled with granules.
Nucleus has 2 lobes but hard to make out most of the time due to dark staining granules

6. Monocyte- agranulocyte
Kidney-bean shaped nucleus, usually contains a “notch”.
Highly phagocytic. A lot of cytoplasm present.

7. Lymphocyte-agranulocyte
T or B cell. Part of body’s specific defenses.
Large, round, dark staining nucleus- takes up the majority of the cell. Very little cytoplasm visible around periphery.

8. quiz: what parts of blood can you see here?

9. Answer: platelet erythrocytes neutrophil lymphocyte erythrocytes
eosinophil

10. Quiz yourself

11. A neutrophils
B eosinophil
C basophil
D neutrophil
E eosinophil
F plasma cell (omit)
G lymphocyte
H lymphcyte
I lymphocyte
J monocyte
K monocyte
L monocyte

12. Know three tunics & how to tell apart an artery, vein & nerve

14. Artery, vein, nerve
vaso vasorum