Which of the following statements regarding the erythrocyte fragility curve is correct?
• The sigmoidal shape of the curve reflects the very wide range of red cell fragilities. • As the NaCl solution surrounding the red cell increases in concentration from 0.0 to 0.9 g/100ml, the red cells are more likely to lyse. • An individual with particularly fragile red cells, would have an erythrocyte fragility curve shifted to the right. • In the red cell fragility experiment, the solutions used are of varying degrees of hypertonicity to the red cells. • More than one of the above statements is correct. 4. Which of the following statements regarding hemostasis is correct? • Hemophilia will prolong both clotting and prothrombin time. • Bleeding time measures the amount of time for a fibrin thread to form. • Clotting time is usually in the order of 2-4 minutes. • A severe Factor VII deficiency will prolong prothrombin time, but not bleeding time. • Prothrombin time is measured by the Duke method using the ear and a piece of filter paper. 5. A given blood sample has the following ind
