PCB 3233 UCF Exam 1-Questions With
100% Verified Answers.
What are the three Granulocytes? - ✔✔Basophils, Eosinohils, Nuetrophils
What is the main function of Dendritic Cells? - ✔✔-Present antigens to T-Cells by using
innate receptors
-Have high levels of MHC class II on surface
Describe Hematopoiesis - ✔✔Cellular elements of the blood originate from
Hematoipoetic Stem Cells (HSC):
-Platelets
-Leukocytes
-Erythrocytes
What are the two most abundant leukocytes? - ✔✔Neutrophils & Lymphocytes
What are the different places for hematopoiesis in the life? - ✔✔Embryo yolk sac/liver
3-7 months spleen
4-5 months shift to bone marrow
adults: bone marrow
What are naive lymphocytes? - ✔✔Lymphocytes that have not encountered an antigen
What are lymphoblasts? - ✔✔Interacted w/an antigen & proliferate. Later
become memory/effector cells
What are effector cells? - ✔✔Cells that eliminate
antigens -Plasma B-cells secrete antibodies
, -Cytokine producing Helper T cells: CD4 cell
-T Cytotoxic Cells: CD8 cells
Describe NK Cells - ✔✔-Found mainly in
circulation -Make up 5-10% of blood
-Contain cytotoxic substances that protect from viruses and
tumors -Secrete cytokines
What do Cytokines do? - ✔✔-Prevent viral
replication -Help activate T-Cell mediated immunity
Neutrophils - ✔✔-killers
-Capture, engulf, & kill microbes
-Work in damaged tissues & die there (short life span)
-Phagocyte w/toxic granules
Follicular Dendritic Cells - ✔✔Hold intact antigens in specialized areas of lymph tissues
Mast Cells - ✔✔-Origin unknown but differentiate in bone marrow & mature in
tissues -When activated they release histamines to attract leukocytes
-Cause vasodilation
Eosinophil - ✔✔-Granulocyte
-Stains red
-Fights parasites
Basophils - ✔✔-Stain blue
100% Verified Answers.
What are the three Granulocytes? - ✔✔Basophils, Eosinohils, Nuetrophils
What is the main function of Dendritic Cells? - ✔✔-Present antigens to T-Cells by using
innate receptors
-Have high levels of MHC class II on surface
Describe Hematopoiesis - ✔✔Cellular elements of the blood originate from
Hematoipoetic Stem Cells (HSC):
-Platelets
-Leukocytes
-Erythrocytes
What are the two most abundant leukocytes? - ✔✔Neutrophils & Lymphocytes
What are the different places for hematopoiesis in the life? - ✔✔Embryo yolk sac/liver
3-7 months spleen
4-5 months shift to bone marrow
adults: bone marrow
What are naive lymphocytes? - ✔✔Lymphocytes that have not encountered an antigen
What are lymphoblasts? - ✔✔Interacted w/an antigen & proliferate. Later
become memory/effector cells
What are effector cells? - ✔✔Cells that eliminate
antigens -Plasma B-cells secrete antibodies
, -Cytokine producing Helper T cells: CD4 cell
-T Cytotoxic Cells: CD8 cells
Describe NK Cells - ✔✔-Found mainly in
circulation -Make up 5-10% of blood
-Contain cytotoxic substances that protect from viruses and
tumors -Secrete cytokines
What do Cytokines do? - ✔✔-Prevent viral
replication -Help activate T-Cell mediated immunity
Neutrophils - ✔✔-killers
-Capture, engulf, & kill microbes
-Work in damaged tissues & die there (short life span)
-Phagocyte w/toxic granules
Follicular Dendritic Cells - ✔✔Hold intact antigens in specialized areas of lymph tissues
Mast Cells - ✔✔-Origin unknown but differentiate in bone marrow & mature in
tissues -When activated they release histamines to attract leukocytes
-Cause vasodilation
Eosinophil - ✔✔-Granulocyte
-Stains red
-Fights parasites
Basophils - ✔✔-Stain blue
