1. Blood & Its Components
Ms. Lowrie
Biology 11

2. Six Main Functions Transport materials from one place to another.
Provide a watery environment for individual cells.
Help maintain a constant internal temperature.
Combat disease and infection.
Help regulate the body’s pH level.
Prevent the loss of body fluids
through clotting.

3. Components of Blood Plasma Other 45% is all cells Fluid component
Makes up 55%
Other 45% is all cells
Red blood cells
White blood cells
Platelets

4. Plasma Fluid component (90% water) Like a river carrying sediment
Essential nutrients
Enzymes
Hormones
Gases
Organic salts
Fluid component (90% water)
Like a river carrying sediment
Contains and transports:
Proteins
Red blood cells
White blood cells
Platelets

5. Red Blood Cells – RBC (Erythrocytes)
Makes up 43% of blood
Transports oxygen and a little carbon dioxide on its hemoglobin
Hemoglobin
A protein
Consists of a red pigment
Contains iron

6. Did you know? When oxygen is attached hemoglobin it appears RED.
Each RBC contains 280 million hemoglobin molecules
Once oxygen is released, the hemoglobin changes shape and reflects BLUE light.
Can you see it under your skin?

7. Red Blood Cells – RBC Produced in the bone marrow
Rate of 2.3 millions per second
Contain a nucleus when produced, but it is lost in circulation
Gives a donut shape
Used RBC are destroyed by the liver and spleen

8. Red Blood Cell Facts 1 liter of blood can carry:
3 mL of oxygen without hemoglobin
Can survive 4.5 seconds
200 mL of oxygen with hemoglobin
Can survive 5 minutes
Anemia is the lack of red blood cells or hemoglobin
Causes: loss of blood or lack of dietary iron

9. Red Blood Cell Facts Quantity is influenced by the sex,
health, age, and altitude
At high altitudes there is less
oxygen so more RBC are created
Men = 5.5 million RBC per mL of blood
Women = 4.5 million RBC per mL of blood

10. White Blood Cells (Leukocytes & Lymphocytes)
Make up about 1% of blood
Protect against illnesses and invaders
Form the immune system
Pus is created from dead white blood
cells that have engulfed an invader
Your own guard
or doctor!

11. White Blood Cells Larger than RBC Contain a nucleus Fact:
There are 700 RBC for
every white blood cell

12. Platelets Make up about 1% of blood
Necessary for coagulation (clotting)
If broken blood vessel is found a set of chemical reactions is started
Fibrin - a sticky network of protein fibers forms over the injury
A dry and thick crust (scab) will form
A natural band aid!

13. Platelet Facts
Hemophilia is a genetic blood disorder where clots cannot be formed
Can die of blood loss
Thrombosis is a clot that forms and closes off a blood vessel
Clot in brain can cause an apoplectic stroke or a heart attack
Clot that moves is an embolism and it very dangerous

15. Complete Your Test Tube
Identify 4 main components & their percentages

16. Four Components of Blood

17. Complete Review Table

18. Review Table

19. Any Questions?

20. Task Use notes & pages 244 – 246 Answer #1, 4 – 8 (on page 246)

21. Page 249 - #9 Leukemia – rapid white blood cell growth Sample:
B – high white blood cell count

22. Page 249 - #12 High altitude – less oxygen available Sample:
A – high RBC count – to carry more oxygen

23. Page 249 - #11 Lead poisoning – destroys bone marrow Sample:
C – low RBC count b/c produced in bone marrow

24. Concept Map Blood 90% Gases, cells, nutrients, etc. ____ %
which is composed of
Gases, cells, nutrients, etc.
Blood
is made up of
____ %
Cells
including
function
which carry
a.k.a. coagulation
function
__________ & __________
also known as erythrocytes
types: leukocytes & lymphocytes

25. Concept Map Blood 90% water 55% Plasma which is composed of
Gases, cells, nutrients, etc.
Blood
is made up of
10 % 1%
Cells
including
Platelets
function
43%
blood clotting 1%
Red Blood Cells
a.k.a. coagulation
White Blood Cells
which carry
function
oxygen & carbon dioxide
fight invaders (immune system)
also known as erythrocytes
types: leukocytes & lymphocytes