Where are red blood cells principally manufactured in the body________________________?
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Answer: B. Bone marrow
Explanation
Red blood cells are principally manufactured inside the specialized spongy tissue found within red bone marrow. Hematopoiesis is the biological process through which erythrocytes are continuously generated in the skeletal system. The flat bones and ends of long bones contain the active marrow necessary for sustained blood cell production. Erythrocytes are specialized cells responsible for transporting oxygen from the lungs to body tissues. Bone marrow is a flexible tissue located in the interior cavities of human bones. Pluripotent stem cells residing within the bone marrow differentiate into various blood cell lineages.
Medical conditions such as leukemia directly impact the normal functioning and production within bone marrow. Physicians examine bone marrow biopsies to diagnose unexplained anemias and other hematological disorders. Nutrient deficiencies in iron or vitamins can impair the marrow's ability to produce sufficient red blood cells. The heart functions primarily as a muscular pump to circulate blood rather than manufacture cells. The lungs facilitate gas exchange between inhaled air and the bloodstream rather than producing blood cells. The option all of these is incorrect because only the bone marrow manufactures red blood cells.
- Subject
- Physical Education
- Category
- Physical Education
- Topic
- —
- Difficulty
- medium
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