Site of RBC formation in a 20 year old healthy male is:
Correct Answer: Flat bones
Description: Erythropoiesis : 1st trimester - in mesoderm of yolk sac (Mesoblastic stage); 2nd trimester - liver & spleen (Hepatic stage); 6 months onward - bone marrow (Myeloid stage). At bih - all bones have red bone marrow, producing cells. Progressively, bone marrow turns yellow; shafts of long bones first turn yellow, followed by their ends. By 20 years - red marrow exists only in sternum, ribs, veebrae, pelvis and skull.
Category:
Physiology
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now