Hemopoiesis

During fetal development, where does hemopoiesis first occur?

• Red bone marrow

• Liver

• Umbilical vesicle

• Spleen

Where does hemopoiesis primarily occur after birth?

• Liver

• Spleen

• Red bone marrow

• Lymph nodes

Which organ releases erythropoietin to stimulate erythropoiesis?

• Liver

• Spleen

• Kidneys

• Heart

What stimulates the process of erythropoiesis in the body?

• High oxygen levels

• Low oxygen levels (hypoxia)

• Increased white blood cell count

• Excess nutrients in the blood

Which of the following blood components is primarily responsible for clot formation?

• Red blood cells

• White blood cells

• Platelets

• Plasma

What is the primary function of hemoglobin in red blood cells?

• To fight infections

• To transport oxygen and carbon dioxide

• To regulate blood pH

• To form blood clots

Which component of hemoglobin binds oxygen?

• Alpha chains

• Beta chains

• Heme group

• Globin protein

Why do mature red blood cells lack mitochondria?

• To create more space for hemoglobin.

• To reduce energy consumption in blood circulation.

• To prevent the use of oxygen they transport.

• To speed up the diffusion of gases.

What is the normal platelet count range in human blood?

• 50,000–100,000/μL

• 150,000–400,000/μL

• 500,000–700,000/μL

• 1,000,000–1,500,000/μL

Which type of white blood cell combats parasitic infections and allergic reactions?

• Neutrophils

• Eosinophils

• Basophils

• Monocytes