What provides nourishment and lubrication in the TMJ?

An elderly woman is suffering from a closed head injury after falling down five steps. She is responsive to painful stimuli and is breathing shallowly. When evaluating her airway, you note that she has both upper and lower dentures. Her upper dentures are secure, but her lower dentures are loose. Prior to providing positive pressure ventilation, you would:

A) re-secure the lower dentures. B) leave the dentures as you found them. C) remove the lower dentures. D) remove both the upper and lower dentures.

Items placed in order of relative difficulty is based on

a. item response theory. b. generalizability theory. c. classical test theory. d. grounded theory.