Which of these choices is NOT a type of leukemia?

Which of the following statements regarding the placenta is correct?

A. The placenta allows oxygen, carbon dioxide, and other products to transfer between the mother and fetus but does not allow blood to mix between the mother and fetus. B. The placental barrier consists of two layers of cells and allows the mother's blood that contains high concentrations of oxygen to directly mix with the blood of the fetus. C. The placenta, also referred to as the afterbirth, provides oxygen and nutrients to the fetus and is expelled from the vagina about 30 minutes before the baby is born. D. The placenta allows for the transfer of oxygen and carbon dioxide between the mother and fetus but prevents most medications from passing between the mother and fetus.

Maintaining positive pressure in the airway during expiration to prevent collapse of the smaller airways and alveoli would be called:

A) positive end-expiratory pressure (PEEP). B) positive pressure ventilation (PPV). C) peak expiratory flow rate (PEFR). D) continuous positive airway pressure (CPAP).