Biology: Blood Cells in human (free read in e-library)

Biology: Blood Cells

 

They are of 3 types

 

Red Blood Corpuscles (RBC):

• Also called erythrocytes, disc-shaped, no nucleus, contains a pigment called Haemoglobin, which gives blood its red color and transports oxygen and carbon di oxide.
• Manufactured in Red Bone marrow
• Life is of 120 days.
• No. of RBCs is 4.5-5 million/cubic mm. of blood.

 

White Blood Corpuscles (WBCs):

• Also called leucocytes, rounded, with a nucleus and far less numerous than RBCs (8,000 per cubic mm. of blood).
• Manufactured in Red Bone marrow.
• Act as the soldiers of body’s defense system.

 

Platelets:

• Also called thrombocytes and are about 2,50,000 per cubic mm. of blood.
• Manufactured in Red Bone marrow.
• Help the blood to clot.