Self Quiz for The Innate Immune System: B1. Defense Cells in the Blood

Study the material in this section and then write out the answers to these questions.
Do not just click on the answers and write them out. This will not test your understanding of this tutorial.

1. What is the difference between a CBC and a leukocyte differential count? (ans)

2. A person has an elevated white blood cell count with anelevated number of band-form neutrophils. What is the significance of this? (ans)

3. Match the following descriptions and functions with the type of leukocytes:

_____ Important phagocytes; 54%-75% of the leukocytes; granules stain poorly; produce enzymes for the synthesis of bradykinins and prostaglandins that promote inflammation. (ans)

_____ Capable of phagocytosis but primarily kill microorganisms and parasitic worms extracellularly; 1%-4% of the leukocytes; large granules stain red; secrete leukotriens and prostaglandins to promote inflammation. (ans)

_____ Not important in phagocytosis; large granules stain a purplish blue; 0%-1% of the leukocytes; release histamine, leukotriens, and prostaglandins to promote inflammation. (ans)

_____ Important in phagocytosis and aid in the adaptive immune responses; produce cytokines; 4%-8% of the leukocytes; differentiate into macrophages and dendritic cells when they leave the blood and enter the tissue. (ans)

_____ Mediate humoral immunity (antibody production); have B-cell receptors (BCR) on their surface for antigen recognition; differentiate into antibody-secreting plasma cells. (ans)

_____ Regulate the adaptive immune responses through cytokine production; have CD4 molecules and TCRs on their surface for antigen recognition. (ans)

_____ Carry out cell-mediated immunity; have CD8 molecules and TCRs on their surface for antigen recognition; differentiate into cytotoxic T-lymphocytes (CTLs). (ans)

_____ Lymphocytes that lack B-cell receptors and T-cell receptors; kill cells to which the antibody IgG has attached as well as human cells lacking MHC-I molecules on their surface. (ans)

a. B-lymphocytes
b. T4-lymphocytes
c. T8-lymphocytes
d. NK cells
e. basophils
f. neutrophils
g. eosinophils
h. monocytes

4. State what type of cell monocytes differentiate into when they enter tissue. (ans)

5. Multiple Choice (ans)

• RETURN TO "THE INNATE IMMUNE SYSTEM: B1. DEFENSE CELLS IN THE BLOOD"

• RETURN TO UNIT 5 TABLE OF CONTENTS

Gary E. Kaiser, Ph.D.
Professor of Microbiology
The Community College of Baltimore County, Catonsville Campus
This work is licensed under a Creative Commons Attribution 4.0 International License.
Based on a work The Grapes of Staph at https://cwoer.ccbcmd.edu/science/microbiology/index_gos.html.