blood. body contains 4-6 l consists of – water – red blood cells – plasma – white blood...

BLOOD

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

platelets

Whole Blood Sample

Red blood cells

White blood cells

Platelets

Plasma

Sample Placed in Centrifuge Blood Sample That Has Been Centrifuged

Whole Blood Sample

Red blood cells

White blood cells

Platelets

Plasma

Sample Placed in Centrifuge

Blood Sample That Has Been Centrifuged

Whole Blood Sample

Red blood cells

White blood cells

Platelets

Plasma

Sample Placed in Centrifuge

Blood Sample That Has Been Centrifuged

Liquid Portion (Plasma) Carries • Blood cells

– Erythrocytes (RBC - red blood cells)

– Leucocytes (WBC - white blood cells)

• Platelets (non cellular particles)• Proteins• Nutrients - Digestive System• Gases - Respiratory System• Inorganic salts

• Hemoglobin, iron containing molecule

• Loosely picks up oxygen in the lungs

• Loses oxygen in areas low in oxygen (diffuses)

Oxygenated Blood

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

Platelets

LABEL

Red Blood Cell

Platelet

White Blood Cell

• 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

• fight infection/disease– Attack foreign substances

• Less abundant• Large cells• Some live for months

– Most just a few days• ALL contain nuclei

• 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

Break in Capillary Wall

Clumping of Platelets Clot Forms

• Massive loss of blood requires a transfusion• Four Types– A– B– AB– O

• Inherited from your parents

• 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