Human Blood

Human Blood

• Blood is a fluid connective tissue.
• Process of formation of human blood is called Hemopoises.
• The quantity of the blood in the human's body is 7% of the total weight.
• PH Value of blood is 7.4.
• There is an average of 5-6 litres of blood in human body.
• Blood is consist in two parts- Plasma and Blood Corpuscles.
• Blood Corpuscles is divided in three parts- Red Blood Corpuscles (RBC), White Blood Corpuscles and Blood Platelets.

➤Red Blood Corpuscles (RBC)

• RBC of a mammal is biconcave (Erythrocytes)
• There is no Nucleus in it. Exception: Camel and Lama.
• Its life span is from 20 days to 120 days.
• New RBC is formed in Red Bone Marrow.
• Liver is the grave of RBC.
• Human blood is red due to Hemoglobin.
• Normal range of hemoglobin found in an adult man is 17.5 gm/100 ml of blood. 

➤White Blood Corpuscles (WBC)

• Its also called Leukocytes.
• Its life span is form 2 to 4 days.
• Nucleus is present in white blood corpuscles.
• The ratio of RBC to WBC is 600:1.
• Most WBC found in human blood is Neutrophils.
• Least WBC found in human blood is Beasophiles.
• Largest WBC found in human blood is Monocytes.
• Smallest WBC found in human blood is Lymphocytes.
• Increasing order of WBC is called Laucamia.
• Decreasing order of WBC is called Leucopimia.

➤Blood Platelets

• Its also called Thrombocytes.
• Its only found in the blood of human and other mammals.
• Its life span is from 3 to 5 days.
• There is no nucleus in it.
• Its main function is to help in clotting of blood.
• Increasing of platelets due to Thrombolastic.

1. Colour of Plasma is Light Yellow.
2. Yellow colour of plasma is due to Bilrubin.
3. Cornea is the part of human body where blood is not found.
4. According to numbers: RBC>Platelets>WBC.
5. According to Size: WBC>Platelets>RBC.
6. Colour of Cockroach's blood is white cause of Hymolimph. 
7. Cleaning process of blood is called Dialysis.
8. Two metals (Iron & Gold) found in blood.
9. Clots of Blood due to which vitamin: K
10. Clots of Blood due to which elements: Calcium
11. Clots of Blood due to which Protein: Fibrinogen.

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