RBC production and control Flashcards
1
Q
What is RBC production called?
A
Erythropoietin
2
Q
Where does embryo and foetus RBC production happen?
A
Yolk sac, liver and spleen
3
Q
Where does after birth RBC production happen?
A
In red bone marrow (hemopoietic)
4
Q
Where are RBC produced from?
A
hematopoietic stem cells/ hemocytoblasts
Go through several stages of development before becoming mature RBC
5
Q
What is the average lifespan of a RBC?
A
120 days
6
Q
How does the total number of RBC remains constant
A
Due to a negative feedback mechanisms- utilises the hormone erythropoietin released from the kidneys and liver in response to detection of low 02 levels
7
Q
What does polycythaemia cause?
A
viscous, slow moving blood and o2 deficiency
8
Q
Stages of production of RBC
A
Absorption of nutrients Transport nutrients via blood Erythropoiesis RBC circulate 120 days Breakdown of RBC Haemoglobin breakdown Iron is recycled Bilirubin excreted via bile
