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BLOOD. Body contains 4-6 L Consists of – Water – Red Blood Cells – Plasma – White blood cells and platelets.

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Presentation on theme: "BLOOD. Body contains 4-6 L Consists of – Water – Red Blood Cells – Plasma – White blood cells and platelets."— Presentation transcript:

1 BLOOD

2 Body contains 4-6 L Consists of – Water – Red Blood Cells – Plasma – White blood cells and platelets

3 Whole Blood Sample Red blood cells White blood cells Platelets Plasma Sample Placed in CentrifugeBlood Sample That Has Been Centrifuged

4 Whole Blood Sample Red blood cells White blood cells Platelets Plasma Sample Placed in Centrifuge Blood Sample That Has Been Centrifuged

5 Whole Blood Sample Red blood cells White blood cells Platelets Plasma Sample Placed in Centrifuge Blood Sample That Has Been Centrifuged

6 Liquid Portion (Plasma) Carries Blood cells – Erythrocytes (RBC - red blood cells) – Leucocytes (WBC - white blood cells) Platelets (non cellular particles) Proteins – Enzymes – Hormones – Endocrine System Nutrients - Digestive System Gases - Respiratory System Inorganic salts

7 Hemoglobin, iron containing molecule Loosely picks up oxygen in the lungs Loses oxygen in areas low in oxygen (diffuses) Oxygenated Blood

8 50% Water 45% Erythrocytes (RBC) 4% Plasma with Substances 1% Leukocytes (WBC) + Platelets

9 Transporters of – Oxygen – Carbon Dioxide RBC – Lack a nucleus – Contain hemoglobin – Disk-shaped RBC are produced in red bone marrow of – ribs, – humerus, – femur, – sternum, and other long bones Lives for 120 days

10 WBC fight infection/disease – Attack foreign substances Less abundant Large cells Some live for months – Most just a few days ALL contain nuclei

11 PLATELETS are for CLOTTING blood Cell fragments Produced in bone marrow Short life span (1 week) Fibrin (sticky network of protein fibers) – Form a web trapping blood cells

12 Break in Capillary Wall Clumping of PlateletsClot Forms

13 Massive loss of blood requires a transfusion Four Types – A – B – AB – O Rhesus factor (Rh) –Rh + (have antigen) –Rh - (NO antigen) Inherited from your parents

14 Plasma contains proteins that correspond to the shape of the different antigens If you mix one type with the wrong one, you get CLUMPING Type O is the universal donor Type AB is the universal acceptor

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