1. Blood By the end of the lesson you should: Know the composition of Blood Know the function of red blood cells and plasma Know the different blood types Know about blood type compatibility in transfusions

2. the average human has 5 litres of blood it is a transporting fluid it carries vital substances like oxygen and nutrients to all parts of the body Blood

3. Human blood smear X 500

4. plasma (55%) red blood cells (5-6-million /ml) white blood cells (5000/ml) platelets

5. Plasma liquid part of blood plasma transports:- soluble food molecules waste products hormones antibodies

6. Red blood cells (RBCs) transport oxygen hollowed out and filled with hemoglobin (oxygen carrying substance)

7. White blood cells the bodies “defence” part of the immune system much larger than RBCs far fewer

8. Platelets if you get cut: platelets produce tiny threads these form a web-like mesh that traps blood cells. these harden forming a clot, or "scab."

9. x 1000

10. Blood types 4 Blood types: –A –B –AB –O (lack of a type) Rh + or – Ex: B+,O-, AB-, etc.

12. Transfusions People need blood: –Excessive bleeding –Organ transplants –Blood and liver diseases Can only receive certain types of blood based on blood type

13. …can only receive what you have… Can he receive B? Can he receive A? AB? O? Patient has type A blood

14. Can she receive A+ ? Can she receive O+ ? O - ? AB - ? Patient has Type O + blood …can only receive what you have…

15. Give blood! Must be 17 years old On Gottingen next to the Citadel Free Cookies!

16. http://www.youtube.com/watch?v=0kdjmG 7aIBE&feature=channel - Blood Serviceshttp://www.youtube.com/watch?v=0kdjmG 7aIBE&feature=channel