Presentation on BLOOD prepared by MS. JASPREET KAUR Clinical instructor at MHR DAV Institute of nursing education, Jalandhar. In this PPT there are introduction of BLOOD, Function of blood and Components of blood explained briefly.

1. THE BLOOD
PRESENTED BY:
JASPREET KAUR
CLINICAL INSTRUCTOR

2. DEFINITION:
Blood is a specialized fluid of connective tissue in
humans and other animals that delivers necessary
substances such as nutrients and oxygen to the cells
and transport metabolic waste products away from
those cells.

3. PHYSICAL CHARACTERISTICS OF BLOOD
 Color: Scarlet(oxygen rich) to dark red (oxygen poor)
 Volume: 4-5 L (females); 5-6 L (males)
 Viscosity: 5 times more viscous than water
 Specific Gravity: 1.045-1.065
 pH: 7.35-7.45
 Temperature: 38 degree celcius

4. FUNCTIONS OF BLOOD
 Transportation-
1. Blood transport oxygen from lungs to body tissues and carbon dioxide
from the cells to the lungs.
2. It transport nutrients from alimentary tract to the tissues.
3. It transport hormones from endocrine glands to their target glands and tissues.
4. It transports waste products of cellular metabolism from body tissues to excretory
organs

5. Functions of blood
 Protection: the blood restricts fluid losses through damaged vessels. Platelets in
the blood and clotting proteins minimize blood loss when blood vessel is
damaged.
 Regulation: blood regulates pH and maintains the water and electrolyte balance
in the body.
Also regulates the body temperature.

6. COMPONENTS OF BLOOD

7. PLASMA PROTEINS

8. Erythrocytes(Red Blood Cells)
 Main function is to carry oxygen
 Biconcave disks
 Essential bags of hemoglobin
 Anucleate (no nucleus)
 Outnumber white blood cells 1000:1
 Major contributing factor to blood viscosity
 Life span of RBCs: 120 days

10. Leukocytes (White Blood Cells)
 Colorless- lack hemoglobin
 Have nuclei
 Can be stained and seen under microscope
 Largest blood cells
 Life span : 12-20 days

11. Leukocytes (White Blood Cells)

12. Thrombocytes (Platelets)
 Smallest of the circulating formed elements
 Are anuclear bodies produced in bone marrow from megakaryocytes
(hematopoietic cells which are responsible for the productions of blood platelets)
 Minute discs 1-4 micro diameter
 Have a life span of 8-12 days, old ones are removed by tissue macrophages mostly
in spleen

13. HEMOSTASIS

14. HEMOSTASIS