Multiple Choice
In an adult with normal erythrocyte turnover, approximately how long do transfused donor red blood cells (packed RBCs) typically survive in the recipient’s circulation?
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17. The Blood
Erythrocytes
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which of the following might trigger erythropoiesis?
A
Elevated blood pressure
B
Increased blood glucose levels
C
Low oxygen levels in the blood
D
High levels of carbon dioxide in the blood
Verified step by step guidance1
Understand the term 'erythropoiesis': Erythropoiesis is the process by which new red blood cells (erythrocytes) are produced in the bone marrow.
Identify the primary trigger for erythropoiesis: The main stimulus for erythropoiesis is low oxygen levels in the blood, a condition known as hypoxia.
Recognize the role of erythropoietin: When oxygen levels are low, the kidneys release a hormone called erythropoietin, which signals the bone marrow to increase the production of red blood cells.
Consider the physiological response: Increasing the number of red blood cells enhances the blood's capacity to carry oxygen, thereby addressing the hypoxic condition.
Evaluate the options: Elevated blood pressure, increased blood glucose levels, and high levels of carbon dioxide do not directly trigger erythropoiesis. Low oxygen levels are the correct trigger.
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