Cerebrospinal fluid is formed from blood by clusters of capillaries in the brain known as ________
A) choroid plexuses
B) arachnoid villi
C) ventricles
D) sinuses
A
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How would a decrease in the concentration of iron in the blood affect the process of hemostasis?
A) Coagulation would proceed more slowly. B) Platelet plugs would fail to form. C) Retraction would occur prematurely. D) Coagulation would proceed more rapidly. E) There would be no effect.
Supplemental oxygen given to a patient with an acute myocardial infarction:
A) will prevent the patient from developing a lethal cardiac dysrhythmia. B) should not exceed 3 L/min in order to prevent oxidative injury. C) oxygenates the myocardium that is distal to the occluded coronary artery. D) enhances the body's compensatory mechanisms during the cardiac event.
A fellow student has just returned from a trip to the jungle and is feeling ill. He is diagnosed with Chagas disease, which is caused by a parasite. Which leukocyte is most likely to be elevated, as shown by a white blood cell count?
A) basophil B) lymphocytes C) eosinophil D) neutrophil
Digestive juices in the lumen of the intestine move across which surface of the epithelial cells there?
A. Intracellular surface B. Basal surface C. Laminar surface D. Apical surface