1. Circulatory System Blood

2. Blood
In general, the blood is a fluid tissue helping to maintain homeostasis for all cells in the body.
Transport of needed substances to body cells. (oxygen, amino acids, glucose, fatty acids, glycerol, salts, etc.)
Transport of wastes from cells. (urea, water, carbon dioxide in the form of the bicarbonate ion)
Helps to maintain a constant body temperature
Aids the body in fighting disease

3. Composition of blood
Blood transports materials through out the body inside blood vessels.
Blood is a tissue of fluid & cells
plasma
liquid part of blood
dissolved salts, sugars, proteins, and more
cells
red blood cells (RBC)
transport O2 in hemoglobin
white blood cells (WBC)
defense & immunity
platelets
blood clotting

4. Plasma Straw colored, nonliving part of blood. 90% Water
Helps to regulate body temperature
Contains Electrolytes
Plasma transports blood cells, products of digestion and hormones throughout the body.

5. How much blood is in the human body?
About 5 liters
About 7 % of your body mass
About Liters in an adult human
Men = 5.6 Liters
Women = 4.5 Liters
Pregnant woman = 5.0 Liters

6. The Functions of Blood Delivers: Picks Up: Nutrients - waste  kidneys
Oxygen, Water, carbon dioxide lungs
minerals
Hormones and enzymes heat  skin
Pollutants

7. Erythrocytes Red Blood cells:
Shaped like round plates indented in the center.
Have no nucleus when mature
Most numerous
Smaller than white blood cells
Produced in the red marrow of long
bones
Destroyed in the liver and spleen
Contains the iron protein compound HEMOGLOBIN whose chief function is to combine with oxygen and carry it to cells

8. Why is blood red?
Blood is red because it contains hemoglobin and iron rich pigment.

9. What does hemoglobin do
Hemoglobin picks up the oxygen molecules and drops off CO2
250,000 hemoglobins in 1 red blood cell

10. Carbon Monoxide Binds to RBC better than oxygen. Not good
Kills us silently
Cant smell it or taste it.

11. Anemia Occurs when the blood does not have enough hemoglobin.
Treated by taking in more iron
Because iron makes up hemoglobin

12. Leukocytes White blood cells
Fight infections by forming antibodies or engulfing bacteria
Large in size, several different types
Have a nucleus
Phagocyte
About 8,000 per drop of blood
Most are formed in the bone marrow
or in the lymph tissue

14. Phagocytes Engulf bacteria and viruses by phagocytosis
Able to leave the bloodstream and move between the cells of the body
by squeezing through the
capillary walls

15. Lymphocytes
Produce antibodies which clump bacterial poisons or bacteria (antigens)
Antigens: foreign substances in the body

16. Platelets Smallest part of blood No nucleus Live 2-4 days
Involved in clotting of blood
Creates fibrin
Enzyme that helps clot blood

17. Blood Clotting
Involves a series of enzyme controlled reactions resulting in the formation of protein fibers that trap blood cells and form a clot

18. Blood Clotting chemical emergency signals platelets seal the hole
protein fibers build the clot

19. What’s wrong with this picture?

20. Sickle Cell Anemia Genetic disease Red blood cells become sickle shape
Cant carry as much oxygen

21. Malaria Disease that attacks the RBC. Causes high fever
If you have sickle cell shaped RBC can not get the disease.

22. Leukemia
Form of cancer in which the bone marrow makes too many white blood cells.