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BLOOD COMPOSITION AND FUNCTION

PHYSICAL CHARACTERISTICS AND VOLUME

COMPONENTS

Viscous, slightly alkaline fluid

representing about 8% of total body weight

FUNCTIONS

FORMED ELEMENTS

Delivering oxygen and nutrients to body tissues

Maintaining body temperature and pH

Hemostasis and prevention of

infection

BLOOD PLASMA

It is 45% of whole blood,

Erythrocytes

Leukocytes

Red blood cells

White blood cells

Platelets

COAGULATION

Extrinsic or intrinsic pathways

They converge as

prothrombin is converted to thrombin

CLOT RETRACTION

Fibrinolysis occurs

TRANSFUSION

DISORDERS OF HEMOSTASIS

Thrombocytopenia

Hemophilia

Diseminated intravascular coagulation

Replace severe and rapid blood loss

DIAGNOSTIC BLOOD TEST

Current satatus of blood

FETAL HEMATOPOIETIC SITES

Yolk sac

Liver

Spleen

Viscous fluid

LISBETH NUÑEZ 3RD "A"