Questions and Answers
What is the percentage of plasma in blood?
45%
What is the term for the stacking of red blood cells, as seen in this type of cell?
Rouleaux formation
What is the shape of the cell viewed from the side?
Biconcave
What type of stain is used to stain these cells?
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What is the characteristic of the cell's center and periphery?
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What is the primary function of red blood cells?
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What is the unique characteristic of red blood cells that allows them to fit through narrow blood vessels?
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What regulates the production of red blood cells in response to low oxygen levels in the body?
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What happens to red blood cells at the end of their lifespan?
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What is the approximate lifespan of a red blood cell?
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What happens to the components of red blood cells after they are destroyed?
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Study Notes
Blood is a type of C.T content is 55% Plasma And 45% Cells Cell:1-RBCs 2- RBCs 3-platelets and Stained with leishman stain Shape:round and non nucleated Biconcave shape from side view Darkperiphery and pale center acidophilic the have Rouleaux Formation
Function of Red Blood Cells
- Deliver oxygen from lungs to body's tissues and organs
- Carry carbon dioxide from tissues and organs back to lungs for exhalation
Structure of Red Blood Cells
- Flexible, disk-shaped cells with no nucleus or mitochondria
- Contain membrane protein spectrin, which gives them unique shape and allows change of shape to fit through narrow blood vessels
- Contain protein hemoglobin, which binds to oxygen and gives blood its red color
Production of Red Blood Cells
- Produced in bone marrow through erythropoiesis
- Regulated by hormone erythropoietin (EPO) produced by kidneys
- EPO stimulates production of RBCs in response to low oxygen levels in body
Lifespan of Red Blood Cells
- Average lifespan of RBC is approximately 120 days
- Removed from circulation by spleen and destroyed at end of lifespan
- Components of RBCs recycled, and iron reused to produce new RBCs
