How many steps are involved in the extrinsic pathway to the clotting cascade?
a. eight
b. seven
c. six
d. five
e. four
e
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The QRS complex in an electrocardiogram best represents:
A. depolarization of the atria B. repolarization of the atria C. depolarization of the ventricles D. repolarization of the ventricles E. the delay at the AV node
The ____ act like the male sex hormones
a. stimulants
b. depressants
c. anabolic steroids
d. hallucinogens
When central chemoreceptors detect a drop in the pH of the cerebrospinal fluid,
A. the vagus and phrenic nerves stimulate decreased production of the catalyst carbonic anhydrase. B. pontine respiratory centers trigger a decrease in rate and depth of breathing. C. medullary respiratory centers trigger a decrease in rate and depth of breathing. D. medullary respiratory centers trigger an increase in rate and depth of breathing.
Red blood cells (RBCs) have been placed in three different solutions: hypotonic, hypertonic, isotonic. What is the condition of the RBC in solution "C"?
A. Crenated B. Coagulated C. Phagocytized D. Normal E. Hemolyzed