BIOS 255 Week 3 A&P III Lab Study Guide Quiz 2026 Chamberlain
College
1. Which component makes up the largest percentage of total blood volume?
A. Red blood cells
B. Plasma
C. White blood cells
D. Platelets
Answer: B
Rationale: Plasma typically constitutes about 55% of the total blood volume, while formed
elements make up the remaining 45%.外
2. What is the primary function of albumin in the blood?
A. Oxygen transport
B. Blood clotting
C. Immune defense
D. Maintaining osmotic pressure
Answer: D
Rationale: Albumin is the most abundant plasma protein and is crucial for maintaining
colloid osmotic pressure and transporting various molecules.
,3. Which cell type is a precursor to all formed elements of blood?
A. Megakaryocyte
B. Reticulocyte
C. Hemocytoblast
D. Myeloblast
Answer: C
Rationale: Hemocytoblasts are pluripotent stem cells located in the red bone marrow that
give rise to all blood cell lines.
4. What is the average life span of a mature erythrocyte?
A. 10 days
B. 120 days
C. 30 days
D. 1 year
Answer: B
Rationale: Red blood cells circulate for approximately 120 days before being trapped and
destroyed by the spleen and liver.
5. Which hormone stimulates the production of red blood cells?
A. Thrombopoietin
B. Insulin
C. Calcitonin
D. Erythropoietin
Answer: D
Rationale: Erythropoietin (EPO) is released by the kidneys in response to low oxygen
levels to stimulate erythropoiesis.
, 6. A patient with Type A+ blood can safely receive a transfusion from which
donor?
A. Type O-
B. Type AB+
C. Type B+
D. Type B-
Answer: A
Rationale: Type O- is the universal donor and can be given to individuals with Type A+
blood without causing an agglutination reaction.
7. Which leukocyte is the most numerous in a healthy adult?
A. Lymphocyte
B. Monocyte
C. Eosinophil
D. Neutrophil
Answer: D
Rationale: Neutrophils are the most abundant white blood cells, typically accounting for
50-70% of the total WBC count.
8. What is the primary role of platelets?
A. Phagocytosis
B. Antibody production
C. Hemostasis
D. Histamine release
Answer: C
Rationale: Platelets, or thrombocytes, are essential for the process of hemostasis,
specifically the formation of a platelet plug.
College
1. Which component makes up the largest percentage of total blood volume?
A. Red blood cells
B. Plasma
C. White blood cells
D. Platelets
Answer: B
Rationale: Plasma typically constitutes about 55% of the total blood volume, while formed
elements make up the remaining 45%.外
2. What is the primary function of albumin in the blood?
A. Oxygen transport
B. Blood clotting
C. Immune defense
D. Maintaining osmotic pressure
Answer: D
Rationale: Albumin is the most abundant plasma protein and is crucial for maintaining
colloid osmotic pressure and transporting various molecules.
,3. Which cell type is a precursor to all formed elements of blood?
A. Megakaryocyte
B. Reticulocyte
C. Hemocytoblast
D. Myeloblast
Answer: C
Rationale: Hemocytoblasts are pluripotent stem cells located in the red bone marrow that
give rise to all blood cell lines.
4. What is the average life span of a mature erythrocyte?
A. 10 days
B. 120 days
C. 30 days
D. 1 year
Answer: B
Rationale: Red blood cells circulate for approximately 120 days before being trapped and
destroyed by the spleen and liver.
5. Which hormone stimulates the production of red blood cells?
A. Thrombopoietin
B. Insulin
C. Calcitonin
D. Erythropoietin
Answer: D
Rationale: Erythropoietin (EPO) is released by the kidneys in response to low oxygen
levels to stimulate erythropoiesis.
, 6. A patient with Type A+ blood can safely receive a transfusion from which
donor?
A. Type O-
B. Type AB+
C. Type B+
D. Type B-
Answer: A
Rationale: Type O- is the universal donor and can be given to individuals with Type A+
blood without causing an agglutination reaction.
7. Which leukocyte is the most numerous in a healthy adult?
A. Lymphocyte
B. Monocyte
C. Eosinophil
D. Neutrophil
Answer: D
Rationale: Neutrophils are the most abundant white blood cells, typically accounting for
50-70% of the total WBC count.
8. What is the primary role of platelets?
A. Phagocytosis
B. Antibody production
C. Hemostasis
D. Histamine release
Answer: C
Rationale: Platelets, or thrombocytes, are essential for the process of hemostasis,
specifically the formation of a platelet plug.
