red blood corpuscles class 9

RED BLOOD CORPUSCLES

Prepared by,RESHMA. M.S.B.Ed. Natural ScienceCandidate Code: 18114386012St. Thomas Training CollegeMukkolakkalThiruvananthapuram

Blood vesselRed blood cell

platelet

Plasma

White blood cell

Cellular Elements of Blood

1. Red Blood Cells2. White Blood Cells

3. Platelets

Red blood cells (erythrocytes)

Red blood cells are biconcave discs

erythrocytes

RBC’S (Erythrocytes) Shape - a biconcave

disc with large surface area

Can change shape No Nucleus /

organelles Contains hemoglobin Short Life Span

(~120 days)

Cont. Haemoglobin is the protein

molecule that makes up 95% of a red cell. 

The red colour of blood is primarily due to oxygenated red cells. 

Primary Function = Transport oxygen from the lungs to the cells of the body & assist with CO2 removal

Haemoglobin

Molecules of haemoglobin account for 95% of the proteins in RBCs

Haemoglobin is a gas transporting protein molecule

“Sickling” in Red Blood Cells

RBC Production Erythropoeisis = the formation of new

red blood cells

Occurs in red bone marrow

FUNCTION OF RED BLOOD CELLS

Too few, Too many Anaemia – deficiency in Red Blood

Cells

Polycythemia - abnormally high number of RBC’s in circulation

THANK YOU