Objectives for hemotology Test # 4

Objectives for hemotology Test # 4 - Objectives for...

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Objectives for hematology: 1. Describe the components of whole blood and the relative amount (percentage) of whole blood occupied by plasma, red blood cells, white blood cells, and platelets. Composition of Blood Whole Blood: blood taken out of needle 1) 55% Plasma: Mostly water with dissolved proteins Plasma proteins: - Albumins: provides osmotic pressure to blood -Globulins: Antibodies used for immunity -Fibrinogen: converted to fibrin where blood clots 2) ~1% Buffy coat: White blood cells & platelets 3) ~45% Red blood cells: hematocrit: approximates the % of RBCs in whole blood & % of whole blood occupied by formed elements. -White blood cells (leukocytes) -Platelets (Thrombocytes) -Red Blood cells (Erythrocytes) Serum: Plasma w/o clotting factors & less proteins 2. Define the term hematocrit and describe how this value is related to the oxygen carrying capacity of blood. hematocrit: approximates the % of RBCs in whole blood & % of whole blood occupied by formed elements.
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