Exam 3 Flashcards
What is the function of Neutrophils?
- Phagocytic (engulfs and destroy)
- Capable of ameboid movement into the tissues (moves like an ameboid?)
What is the function of Eosinophils?
- Phagocytic
- destroy parasites
What is the function of Basophils?
- storage of histamine
- involved in immediate hypersensitivity reaction
What is the function of Monocytes?
- phagocytic
- cellular
- natural immunity
What is the function of Lymphocytes?
- antibodies
- cell-mediated immunity
What are selectins?
cell adhesion molecules
What are the Mobilization of Defenses for Leukocytes?
- Migration (movement between blood cell walls by adhering to different blood vessels)
- Diapedesis (movement by squeezing through endothelial cells)
What are the three phases of Phagocytosis?
- Migration & Diapedesis
- Opsonization & Recognition (tagging pathogens and recognizing them)
- Ingestion, digestion, and killing
What is the most common cause of leukocytosis?
increase in neutrophils in response to a bacterial infection
What is leukocytosis?
Total leukocyte count is more than 11.0X10 9/L in adult
(Increased leukocyte count)
What is leukopenia?
total leukocyte count is below 4.5 X 10 /L
(Decreased leukocyte count)
What is the most common cause of leukocpenia?
decrease in neutrophils
What is a “shift to the left”?
the early release of bands and metamyelocytes from the bone marrow into circulation(peripheral blood) in response to inflammation or an infection
(just everything starts earlier due to infection/inflammation… aka more to the left)
What are conditions linked to Reactive Chronic Neutrophilia?
- Leukocytes <50 X10 9/L (less than 50,000?)
- Shift to the left
- Presence of toxic granulation, Dohle bodies, and cytoplasmic vacuolization
What two conditions in tandem indicates severe infection?
- “a shift to the left” of the neutrophil population
- Granulocytosis
What does the suffix “-ocytsis” mean?
excess or too much
What does the suffix “-penia” mean?
deficiency or too little
What is a leukemoid reaction?
- a physiological response to a NON-CANCEROUS condition like stress or infection
- increased WBC (leukocytes) count [more than 50k cells/uL]
What symptoms are commonly associated with a Leukemoid reaction?
- leukocytosis with neutrophils (more than 50k)
- left shift
- toxic granulation
- dohle bodies
- cytoplasmic vacuolization (vacuoles in the cytoplasm)
- positive LAP reaction (neutrophils)
What is commonly found in ACQUIRED Neutrophil disorders?
- Hyper-segmentation (5-7 or more lobes)
- Hypo-granularity (less granules in the neutrophils)
- Pseudo Pelger-Huet Anomaly
What is commonly found in INHERITED Neutrophil disorders?
-
Pelger-Huet Anomaly [bi-lobed poly]
looks like a peanut; patient is unaffected by it - May-Hegglin Anomaly
- Chediak-Higashi Syndrome
- Alder-Reilly Anomaly
What do dohle bodies look like?
Sky blue inclusions in the cytoplasm of neutrophils
What conditions would have dohle bodies in the blood smear?
infections, burns, myeloproliferative disorders, pregnancy and inflammation
What are dohle bodies composed of?
ribosomes and endoplasmic reticulum