BYU CELL 220 EXAM 3 /BYU CELL 220 EXAM
3 PREP 2025/2026 WITH ACTUAL CORRECT
QUESTIONS AND VERIFIED DETAILED
ANSWERS |FREQUENTLY TESTED
QUESTIONS AND SOLUTION|ALREADY
GRADED A+|NEWEST|BRAND NEW VERSION
!!|GUARANTEED PASS
What is chemotaxis?
When WBCs are attracted to the site of an infection by damaged or dead cells and/or invading
pathogens
What are the two types of leukocytes?
Granulocytes and agranulocytes
What are the three types of granulocytes?
Neutrophils, Eosinophils, and Basophils
What are the two types of agranulocytes?
Monocytes and Lymphocytes
What is the function of a neutrophil?
To phagocytize pathogens
What is the function of eosinophils?
To destroy parasites. Also important in allergic response.
What is the function of a basophil?
Promote inflammation by releasing histamine and heparin
What is the function of a monocyte?
Phagocytizes pathogens and debris
1|Page
,When a monocyte exits the bloodstream, it becomes a...
Macrophage
What is the function of a lymphocyte?
Coordinate immune response via T, B, and natural killer cells
Lymphocytes reside in the _____ tissue
Lymphatic
What is leukemia?
Cancer in the leukocytes forming cells in the bone marrow leading to proliferation of abnormal
WBCs
What happens when cancer cells take over the bone marrow?
Slowed production of RBCs and platelets leading to anemia and bleedibg
Platelets are also known as...
Thrombocytes
What is the purpose of platelets?
To assist in clotting
Platelets live for...
8-10 says
What are thrombocytes?
Fragments of megakaryocytes
Blood clots are formed of...
Fibrin, platelets, and RBCs
What is thrombocytosis?
High platelet count resulting from disease of the bone marrow or blood, cancer, splenectomy, or
infection
What is thrombocytopenia?
Low platelet count caused by damage to the bone marrow, leukemia, chemotherapy, or an
overactive spleen
2|Page
,What determines blood type?
Surface antigens of the RBC
Blood contains antibodies against the antigens it _____ have
Doesn't
What are the four blood types?
A, B, AB, 0
What is hematopoiesis?
Production of the blood's formed elements
Where does hematopoiesis occur?
The red bone marrow
Erythropoietin (EPO) controls erythrocyte production and is made by the...
Kidneys
Erythropoiesis is the production of...
RBCs
Thrombopoiesis js the production of...
Platelets
Leukopoiesis is the production of...
WBCs
What cells eventually form all blood cells?
Hemocytoblasts (aka Hematopoietic stem cells)
Myeloid stem cells give rise to...
Platelets, Erythrocytes, Basophils, Neutrophils, Eosinophils, and Monocytes
Lymphoid stem cells give rise to...
Natural Killer Cells and Lymphocytes
Arteries transport blood in which direction in relation to the heart?
Away from
3|Page
, In the systemic circuit, arteries carry which type of blood?
Oxygen rich
In the pulmonary circuit, arteries carry which type of blood?
Oxygen poor
What are capillaries?
Smallest blood vessels
What happens in the capillaries?
Gas and nutrient exchange between blood and tissues
Veins transport blood in which direction in relation to the heart?
Toward
In the systemic circuit, veins carry which type of blood?
Oxygen poor
In the pulmonary circuit, the veins carry which type of blood?
Oxygen rich
What is the lumen of a blood vessel?
Central blood-containing space
What are the three tunics of a blood vessel?
Tunica intima, tunica media, tunica externa
The tunica intima is made of what type of epithelial cells?
Simple squamous epithelium
The tunica media is formed of...
Circularly arranged smooth muscle fibers
Vasodilation and vasoconstriction occur in which vessel tunic?
Tunica media
What is the vasa vasorum?
Network of small blood vessels that supply the walls of large blood vessels
4|Page
3 PREP 2025/2026 WITH ACTUAL CORRECT
QUESTIONS AND VERIFIED DETAILED
ANSWERS |FREQUENTLY TESTED
QUESTIONS AND SOLUTION|ALREADY
GRADED A+|NEWEST|BRAND NEW VERSION
!!|GUARANTEED PASS
What is chemotaxis?
When WBCs are attracted to the site of an infection by damaged or dead cells and/or invading
pathogens
What are the two types of leukocytes?
Granulocytes and agranulocytes
What are the three types of granulocytes?
Neutrophils, Eosinophils, and Basophils
What are the two types of agranulocytes?
Monocytes and Lymphocytes
What is the function of a neutrophil?
To phagocytize pathogens
What is the function of eosinophils?
To destroy parasites. Also important in allergic response.
What is the function of a basophil?
Promote inflammation by releasing histamine and heparin
What is the function of a monocyte?
Phagocytizes pathogens and debris
1|Page
,When a monocyte exits the bloodstream, it becomes a...
Macrophage
What is the function of a lymphocyte?
Coordinate immune response via T, B, and natural killer cells
Lymphocytes reside in the _____ tissue
Lymphatic
What is leukemia?
Cancer in the leukocytes forming cells in the bone marrow leading to proliferation of abnormal
WBCs
What happens when cancer cells take over the bone marrow?
Slowed production of RBCs and platelets leading to anemia and bleedibg
Platelets are also known as...
Thrombocytes
What is the purpose of platelets?
To assist in clotting
Platelets live for...
8-10 says
What are thrombocytes?
Fragments of megakaryocytes
Blood clots are formed of...
Fibrin, platelets, and RBCs
What is thrombocytosis?
High platelet count resulting from disease of the bone marrow or blood, cancer, splenectomy, or
infection
What is thrombocytopenia?
Low platelet count caused by damage to the bone marrow, leukemia, chemotherapy, or an
overactive spleen
2|Page
,What determines blood type?
Surface antigens of the RBC
Blood contains antibodies against the antigens it _____ have
Doesn't
What are the four blood types?
A, B, AB, 0
What is hematopoiesis?
Production of the blood's formed elements
Where does hematopoiesis occur?
The red bone marrow
Erythropoietin (EPO) controls erythrocyte production and is made by the...
Kidneys
Erythropoiesis is the production of...
RBCs
Thrombopoiesis js the production of...
Platelets
Leukopoiesis is the production of...
WBCs
What cells eventually form all blood cells?
Hemocytoblasts (aka Hematopoietic stem cells)
Myeloid stem cells give rise to...
Platelets, Erythrocytes, Basophils, Neutrophils, Eosinophils, and Monocytes
Lymphoid stem cells give rise to...
Natural Killer Cells and Lymphocytes
Arteries transport blood in which direction in relation to the heart?
Away from
3|Page
, In the systemic circuit, arteries carry which type of blood?
Oxygen rich
In the pulmonary circuit, arteries carry which type of blood?
Oxygen poor
What are capillaries?
Smallest blood vessels
What happens in the capillaries?
Gas and nutrient exchange between blood and tissues
Veins transport blood in which direction in relation to the heart?
Toward
In the systemic circuit, veins carry which type of blood?
Oxygen poor
In the pulmonary circuit, the veins carry which type of blood?
Oxygen rich
What is the lumen of a blood vessel?
Central blood-containing space
What are the three tunics of a blood vessel?
Tunica intima, tunica media, tunica externa
The tunica intima is made of what type of epithelial cells?
Simple squamous epithelium
The tunica media is formed of...
Circularly arranged smooth muscle fibers
Vasodilation and vasoconstriction occur in which vessel tunic?
Tunica media
What is the vasa vasorum?
Network of small blood vessels that supply the walls of large blood vessels
4|Page
