Erythrocytes (RBC)

Blood

Blood Smear with Erythrocytes – Red Blood Cells (RBCs)

TEM of Red Blood Cells (in cross section)

Colorized SEM of Red Blood Cells (red), platelets (green) and White Blood Cells (purple)

Blood Smear from normal and hypochromic microcytic anemia patients

NormalMacrocytic

Hyperchromic Anemia

Blood Smear from normal and hyperchromic macrocytic anemia patients

Sickle Cell Anemia (arrow = sickle cell)

Colorized SEM of Sickle Cell RBCs (green)

Basophilic Polychromatophilic

Erythroblasts Erythroblasts Normoblast Reticulocyte

Erythropoiesis – Red Blood Cell Development

Bone Marrow Smear with developing red blood cells

Black arrow = basophilic erythroblast

Green arrow = polychromato-philic erythroblasts

Bone Marrow Smear with Megakaryocyte forming platelets (P)

Blood Smear with platelets (a) – inset high mag with hyalomere and granulomere

TEM of a Platelet

Colorized SEM of Red Blood Cells (red), platelets (green) and White Blood Cells (yellow)

White Blood Cells

Neutrophils, Eosinophils, Basophils, Lymphocytes, and

Monocytes

Blood Smear with a Neutrophil (Polymorphonuclear Leukocyte)

Blood Smear with an Eosinophil (bilobed nucleus + red granules)

Blood Smear with a Basophil (irregular nucleus + dark purple granules)

Diagram of Granulopoiesis

White Blood Cell Development

Neutrophilic Early Neutrophilic Late Neutrophilic

Myelocyte Metamyelocyte Metamyelocyte

or Stab Cell

Bone Marrow Smears showing Neutrophil development

Bone Marrow Smear – yellow arrow = eosinophilic myelocyte

1 = Neutrophilic Myelocytes

2 & 3 = Neutrophilic Metamyelo-cytes

Blood Smear with two Monocytes

Blood Smear with a Lymphocyte

Blood Vessels

Arteries and Arterioles

Muscular Artery – TM = tunica media

Wall of the Muscular Artery Arrow = T. Intima; TM = T. media; TA = T. adventitia

TM

TA

Wall of the Elastic Artery

TI = T. Intima; TM = T. media; TA = T. adventitia

TM

TI

TA

Arteriole (A) and Vein (V)

A

V

Thin section of a small arteriole

TEM of a fenestrated

capillary with a RBC in the

lumen

Diagram of the controls of blood flow through a capillary system

Venule (V) and small arteriole (A)

V

A

An arteriole (A) and venule (B) – arrow = capillary

Muscular artery and large vein

Wall of a vein – TI = T. Intima; TM = T. Media; TA = T. Adventitia

TI

TM

TA

Vein with infoldings of the T. Intima = valves (V)