1. 2.02 Understand the functions of the blood in the circulatory system

2. 2.02 Understand the functions of the blood
Essential questions:
What are the functions of blood?
2.02 Understand the functions and disorders of the circulatory system 2

3. What are the functions of blood?
Transportation
What does the blood transport?
Nutrients
Oxygen
Cellular waste products
hormones
Why is this an important function?
Keeps us healthy
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4. What are the functions of blood?
Regulation
How does the blood regulate heat?
Moves your body heat that is put off by the skeletal muscles evenly around the body
How does the blood regulate acid/base balance?
By keeping acidity in a certain range that is conducive to life
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5. What are the functions of blood?
Protection
What function of the blood serve to protect the body?
Components of blood help to fight off infection.
What is the relevance to health?
Keeps the body healthy
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6. Functions of the blood components
Plasma
Erythrocytes
Leukocytes
Thrombocytes
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7. Plasma What is the role of plasma in circulation?
Transports cellular components and aids in blood clotting
Discuss its relevance to health.
Viscosity
Hemophilia
Plasma
Cellular elements
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8. Erythrocytes What are the functions of erythrocytes?
Transport oxygen to tissues and carbon dioxide away from cells
What is the function of hemoglobin?
Blood protein gives blood red color 8

9. Erythrocytes: Hemolysis
Starts here
What is it?
Rupturing or bursting
When does it occur?
Usually during a blood transfusion
What is the lifetime of an erythrocyte?
120 days
What happens to old erythrocytes?
They are broken down by the liver
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10. RBC broken down Prematurely If severe treated with blood transfusion
What is hemolytic anemia? How is it treated?
RBC broken down
Prematurely
If severe treated
with blood transfusion
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11. Leukocytes What is the function of leukocytes? Fight infection
Compare leukocytes to erythrocytes.
RBC transport gases, WBC fight off foreign invaders
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12. Leukocytes Agranulocytes WBC that fights off bacterial, Lymphocytes
WBC that produces antibodies,
produced in thymus and bone marrow
Monocytes
WBC that fights off bacterial,
fungi, and viruses
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13. Leukocytes Secretes heparin - prevents clotting Granulocytes
Neutrophils
Performs phagocytosis
Eosinophils
Fights off parasitic infections
Basophils
Secretes heparin - prevents clotting
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14. Inflammation
The body’s reaction to chemical, physical trauma, or disease producing microorganisms. t
What is inflammation?
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15. Inflammation 15

16. Thrombocytes What is the composition of thrombocytes?
Smallest of solid components of blood, they are pieces of megakaryocytes
What is their function?
Necessary for the initiation of the blood clotting process
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17. Thrombocytes
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18. Blood types Inherited from parents Determined by presence or
absence of an antigen on the
surface of the red blood cell
What are the types of blood? Where do they come from?
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19. Blood types Someone with type A antigen has B antibodies
Someone with type B antigen has A antibodies
Someone with type AB antigen has no antibodies
Someone with type O antigen has A and B antibodies
AB is universal recipient
O is universal donor
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