Flashcards in Exam 2 - WBC Deck (53)
Which cells in our body form the first line of defense from invading micro-organisms?
What distinguishes a WBC from a RBC?
WBCs have a nucleus
What are the two major groups of WBCs?
Granulocytes and agranulocytes
What types of WBCs are granulocytes?
Neutrophils, eosinophils, and basophils
What types of WBCs are agranulocytes?
lymphocytes and monocytes
What is the term for the process by which WBCs differentiate and proliferate?
Where does WBC differentiation and proliferation occur?
Bone marrow (except for lymphocytes which can take place in the thymus, as well)
Which type of WBC can also develop in the thymus as well as the bone marrow?
How long does it take to get from a blast stage of a WBC to a mature stage and enter peripheral blood?
What type of WBC functions in allergies, drug reactions, and parasitic reactions?
Which WBC contains histamine and heparin and functions in immediate hypersensitivity reactions?
Which WBC has the function to combat pyogenic infections?
Which WBC functions to fight off viral infections?
What is the function of monocytes?
To help neutrophils
What is another term of neutrophilic leukocytosis?
What is diagnostic for leukopenia?
WBC count falling below 5,000
Is a fever with a high white blood cell count usually bacterial or viral?
Is a low to moderate fever with decreased WBCs usually bacterial or viral?
Viral (antibiotics do the same)
Which tend to be worse: bacterial or viral infections?
How many WBCs are counted by a tech to arrive at a differential?
What is the difference between a left and right shift when classifying white blood cells?
Right = more mature cells, Left = more immature cells like blasts and pros
What are segs?
Neutrophils (segmented cells)
What is the first line of defense for neutrophils?
Hyper segmented neutrophils are seen with what kind of anemia?
Increased bands means a WBC shift in which direction?
Left (seen with infections/inflammation)
What is the difference in function between B-lymphocytes and T-lymphocytes?
B = tag foreign bodies and antibody production; T = kill foreign bodies
What is the final maturation stage of B lymphocytes?
Are the majority of lymphocytes long or short lived?
Long (as long as 10 years)
Which is responsible for humoral immunity: B or T lymphocytes? Cellular immunity?
Humoral = B; Cellular = T