18 Questions
What is the lifespan of a red blood cell (RBC)?
4 days
Which element is present in each heme of the hemoglobin molecule?
Iron (Fe)
What is the function of hemoglobin in red blood cells?
Oxygen transport
Which blood typing system is based on the presence of A and B antigens on the RBC cell membrane?
ABO blood group system
How many oxygen molecules can each hemoglobin molecule carry?
4
Which process allows hemoglobin to combine with CO2 to form carbaminohemoglobin?
Diffusion
Where does erythropoiesis (RBC production) primarily occur?
In red bone marrow
What characterizes reticulocytes during the process of erythropoiesis?
They lose organelles and develop into mature RBCs within days
What is the average lifespan of a mature RBC in the circulation?
120 days
Which leukocyte type has fine granules in its cytoplasm that stain very pale purple?
Neutrophils
Which leukocyte type is an agranulocyte and has a large kidney-shaped nucleus?
Lymphocytes
What is the primary function of erythrocytes (RBCs) in the human body?
Transport oxygen from the lungs to body tissues
Where does hematopoiesis occur in adults?
Red bone marrow
Which type of stem cells can no longer divide to reproduce more myeloid stem cells?
Progenitor cells
What hormone is responsible for stimulating platelet formation?
Thrombopoietin (TPO)
In what medical condition is erythropoietin (EPO) used to reverse RBC production?
Endstage kidney disease
Which factor stimulates white blood cell (WBC) formation in cancer patients with bone marrow destruction?
Colony-stimulating factor (CSF)
What is the primary function of erythrocytes (red blood cells, RBCs)?
Circulate oxygen throughout the body
Test your knowledge about red blood cells (erythrocytes) and hemoglobin, the oxygen-carrying protein found in red blood cells. Learn about the lifespan of red blood cells, their production rate, and the structure of hemoglobin.
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