Petechiae, Purpura and Ecchymoses are the three terms that refer to bleeding that occurs in the skin. the term “petechiae” refers to smaller lesions. “Purpura” ...

Description and Classification White blood cells are described and classified in several ways: 1. By function:Defense cells; phagocytes (granulocytes, macrophages) Cells that produce ...

Leukocytosis, Granulocytosis, Neutrophilia All three terms indicate increased circulating neutrophils (but not an increase in eosinophils or basophils). This is a very commonly encountered ...

Lymphocytosis Increased numbers of lymphocytes in the blood may occur in infectious mononucleosis (mono), a self-limited viral infection common in young people, and acute infectious ...

This is a disorder in which RBCs – in their own serum or in other serum – clump together (agglutinate) in response to slight cooling (below 86° F it’s <30c). The clumping ...

Polycythemia This is the opposite of anemia; the term literally means “many cells in the blood”. The blood becomes highly viscous (thick) and flows sluggishly. The condition ...

A complete blood count (CBC): is the most widely requested and single most important lab test on blood. Many CBCs are done as routine screens – tests that provide general information ...

The following are some of the most common anemias. They are arbitrarily grouped according to RBC color and size; other sources may group them in different ways. 1. Anemia Due to Bleeding: ...

Hemoglobin, the oxygen-carrying component of RBCs, is composed of two pairs of protein chains called globin and four smaller units called heme, which contain iron. Iron binds and releases ...

Iron is important in cellular metabolism and oxidation, the body needs only trace amounts of two types of iron: • Functional iron, a component of hemoglobin and myoglobin (a pigment ...

A drumstick consists of a small nuclear mass, about 1.5µ in diameter, which is attached to the body of the nucleus by means of a thin filament. Drumsticks may occur in any of the ...

Tissue oxygenation regulates RBC production. If the amount of oxygen transported to the tissues decreases, the rate of RBC production increases. The Feedback Mechanism: Tissue hypoxia ...