Which of these are tiny air sacs surrounded by capillaries where gas exchange occurs? 

All of the following are true regarding the direct antiglobulin test (DAT) except

a. Detects sensitization in vivo of red blood cells with antibody or complement b. Is performed in order to visualize antigen-antibody reactions that happened in the body, not the test tube c. Is usually included in routine pretransfusion testing d. Omits the incubation at 98.6 ° F (37 ° C) phase

Laryngeal mask airway placement includes the use of which of the following?

a. Stylet c. Lighted stylet b. Finger d. Miller laryngoscope