4 1-30. A decreased red blood cell (RBC) count could be the result of a medical condition affecting the 1. compact bone 2. periosteum 3. yellow marrow 4. red marrow 1-31. Blood of the average female adult contains (a) how many million RBCs per (b) what unit? 1. (a) 4.5 (b) mm³ 2. (a) 6.0 (b) cm³ 3. (a) 4.5 (b) 1 4. (a) 4.5 (b) low power field 1-32. A white blood cell (WBC) count of 18,000 may indicate what condition? 1. Leukocytosis 2. Normalcy 3. Infection 4. Vetiligo 1-33. In an accident victim suffering from a fibrinogen deficiency, the rescuer may have difficulty performing which of the actions listed below? 1. Controlling hemorrhage 2. Immobilizing a fracture 3. Supporting respiratory function 4. Reducing a dislocation 1-34. In addition to preventing excessive blood loss, the formation of a blood clot serves which, if any, of the following purposes? 1. To convert fibrinogen into blood serum to aid healing 2. To form the foundation for new tissue growth 3. To manufacture leukocytes 4. None of the above 1-35. The valves of the heart include all of the following EXCEPT 1. atrial 2. mitral 3. tricuspid 4. pulmonary 1-36. Oxygenated blood is carried by which of the following vein(s)? 1. Inferior vena cava 2. Superior vena cava 3. Portal 4. Pulmonary 1-37. The contraction phase of the heart is 1. systole 2. tension 3. diastole 4. active 1-38. The pulse pressure is the difference between which of the following measurements? 1. Venous and arterial pressure 2. Resting and active pulse rate 3. Arterial and ventricular pressure 4. Systole and diastole 1-39. The venous system that carries digested materials from the intestinal tract is called the 1. portal 2. pulmonary 3. abdominal 4. pelvic 1-40. Lymph nodes participate in all of the following functions EXCEPT 1. manufacture of white blood cells 2. filtration of bacterial debris 3. production of hormones 4. collection of large protein molecules