Plasma fluid part 55% of blood volume Contains/transports the proteins, red

blood cells, white blood cells, platelets, essential nutrients, enzymes, hormones, gases, & organic slats

Red blood cells, white blood cells, platelets 45% of blood volume

Transport oxygen & a little carbon dioxide

No nucleusContain hemoglobin

Produced in bone marrowHave nucleus in bone marrow

Loses nucleus once in circulationUsed RBC are destroyed by the liver

and spleen Life span 120 days (no nuclei)

Protein – consists of a red pigment containing iron

Transports oxygen & a little carbon dioxide

The heme consists of 4 molecules of iron attached to the proteins

1 L of blood can carry 3ml of O2 without hemoglobin

1L of blood can carry 200ml of O2 with hemoglobin

O2 attached to hemoglobin appears red

O2 freed & it reflects blue light Shape of hemoglobin molecule changes

shapeOne red blood cell can have 280

million hemoglobin

Body contains 5 L of blood5.5 million per ml of blood in males4.5 million per ml of blood in femalesQuanity is influenced by:

Sex Health Age Altitude ( up to 8 million cells/ml)

Lack of rbc or hemoglobin that decreases the quantity of O2 delivered to the body

Reason are numerous Loss of blood (hemorrhages, ulcers) Lack of dietary iron

BigDifferent from one anotherContain nucleiProtect organisms against illnesses

(immune system)

Essential part of the immune systemMany different leukocytes

Monocytes Lymphocyte Eosinophil Basophil Neutrophil

700 red blood cells for every white globule

Fragments of cells necessary for coagulation (clotting)

Circulate in blood (7 days)Trillions in circulation

Broken blood vessel Plateles release thromboplastine Triggers a set of reactions leading to

formation of clot Sticky network of protein fibers (fibrin)

forms over the injury and stops the blood cells

Dry & thick crust forms

Hereditary bleeding disorder (males)Prolonged bleedingDifficulty clotting – may bleed longerAffects 1:10,000 male birthsFemale carriers occasionally have

bleeding symptomsFactor VIII or IX

Clot that forms & closes off a blood vessel

Clot in the brain can cause an apoplectic stroke or heart attack

Embolism – a clot that moves Any cerebral, coronary, or pulmonary

embolism is dangerous