1. Blood Liquid tissue Liquid tissue 4 Components 4 Components Plasma = 55% Plasma = 55% RBC (erythrocytes) = 44% RBC (erythrocytes) = 44% WBC (leukocytes) = <1% WBC (leukocytes) = <1% Platelets = <1% Platelets = <1%

2. Blood Functions 1. Fight infection/disease 1. Fight infection/disease WBC WBC 2. Blood clotting 2. Blood clotting Platelets Platelets 3. Body temperature 3. Body temperature

3. Blood Functions 4. Transports 4. Transports Gases- (oxygen & carbon dioxide) Gases- (oxygen & carbon dioxide) RBC- (hemoglobin) RBC- (hemoglobin) Plasma- Plasma- Metabolic wastes Metabolic wastes Plasma Plasma Digested Food/Nutrients Digested Food/Nutrients Plasma Plasma Hormones Hormones Plasma Plasma

4. Blood Antibody- Antibody- Protein produced to destroy or weaken antigens Protein produced to destroy or weaken antigens Antigen- Antigen- Bacteria, toxins, foreign blood Bacteria, toxins, foreign blood Cause body to form antibodies Cause body to form antibodies

5. Blood Vaccination Vaccination To give a mild or weakened form of a particular disease To give a mild or weakened form of a particular disease Stimulates antibody formation Stimulates antibody formation When body exposed to antigen in future, can produce antibodies rapidly to fight it When body exposed to antigen in future, can produce antibodies rapidly to fight it

6. Blood Types Types A = 40% A = 40% A + 34%, A - 6% A + 34%, A - 6% B = 12% B = 12% B + 10%, B - 2% B + 10%, B - 2% AB = 5% AB = 5% AB + 4%, AB - 1% AB + 4%, AB - 1% O = 43% O = 43% O + 37%, O - 6% O + 37%, O - 6%

7. Blood Transfusions Can Donate To Can Receive AA, ABA, O BB, ABB, O AB All O O Universal Donor- O Universal Recipient- AB