FiO2 is the concentration of ________________________________________ in inspired air

Which of the following accurately describes what happens to the articular surface of the facet joints of the mid/lower cervical spine during cervical extension?

a. Distraction of articular surfaces b. Compression of articular surfaces c. No change at the articular surfaces

How do sickle cells or spherocytes interfere with the ESR?

a. Prevent rouleaux formation, so falsely decrease b. Encourage rouleaux formation, so falsely increase c. Agglutinate and increase red cell mass, so falsely increase d. Decrease plasma viscosity, so falsely decrease