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Question
Biology
Posted 5 months ago
Could you provide an overview of the life of red blood cells from the cradle to the grave?
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Answer from Sia
Posted 5 months ago
Answer
The life cycle of red blood cells (RBCs) from creation to destruction
Solution
a
Hematopoiesis: RBCs are produced in the bone marrow through a process called hematopoiesis. Hematopoietic stem cells differentiate into erythroid progenitor cells, which eventually become mature RBCs
b
Erythropoiesis: The specific process of RBC formation is called erythropoiesis. Erythropoietin, a hormone produced by the kidneys, stimulates the production of RBCs in response to low oxygen levels in the blood
c
Maturation: Immature RBCs, known as reticulocytes, are released into the bloodstream. They mature into fully functional RBCs within 1-2 days
d
Function: Mature RBCs circulate in the bloodstream for about 120 days. Their primary function is to transport oxygen from the lungs to tissues and return carbon dioxide from tissues to the lungs
e
Senescence and Destruction: After about 120 days, RBCs become old and less flexible. They are removed from circulation by macrophages in the spleen, liver, and bone marrow. The components of the RBCs are recycled
Key Concept
The life cycle of red blood cells involves their production in the bone marrow, maturation, circulation, and eventual destruction.
Explanation
Red blood cells are produced through hematopoiesis and erythropoiesis, mature in the bloodstream, function for about 120 days, and are then removed and recycled by macrophages.

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