In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.

Question: Which of the following conditions causes a decrease in the O2 saturation of the hemoglobin that is not due to a decrease in the partial pressure of oxygen? 
 Options:  <1> Ventilation-perfusion ratio lower than normal. <2> Anemia. <3> Carbon monoxide poisoning. <4> Hypoventilation. <5> Shunt venoarterial.
3

Question: The integral psychological therapy (IPT) of Brenner et al. (1992) consists of different subprograms. Which of these subprograms does NOT belong to such therapy ?: 
 Options:  <1> Cognitive differentiation <2> Solution of interpersonal problems. <3> Social perception. <4> Social skills. <5> Management and control of stress.
5

Question: In the digestive system, the vagus: 
 Options:  <1> Stimulates the contraction of the cardia. <2> The gastro-colic reflex mediates. <3> Decreases the secretion of gastric acid. <4> Inhibits the secretion of pancreatic bicarbonate. <5> It is not choralgogo.

2