Composition of Human Blood

Cellular component


       i)PLATLES/ THROMBOCYTES

•  No nucleus
•  important in process of blood clotting

        ii)RED BLOOD CELL/ ERYTHROCYTES

• Biconcave disc shaped
• Increase TSA/V
• No nucleus to give space for great quantities of haemoglobin, Hb
• Manufactured in bone marrow
• Destroyed in spleen and liver
• Lifespan 120 days @ 4 months

        iii)WHITE BLOOD CELL/ LEUCOCYTES

 

DIVIDE BY 2 GROUPS

 - granulocytes and agranulocytes

GRANULOCYTES ( B. E. N)

• HAVE GRANUL & LOBED NUCLEI

Basophils

-secrete heparin to prevent blood clot

Eosinophils

-control allergic response

Neutrophils

-most in WBC

AGRANULOCYTES 

• NO LOBES & GRANUL

Lmphocytes

-kidney shaped nucleus

Lmphocytes

-produce antibody