In this task, you are given a question and answer options for that question. Using this information, you have to classify each text into different topics: medicine, nursery, psychology, chemistry, pharmacology, biology.

Question: Indicate which of the following statements about dead space of the airway is correct:
Options: <0> It is the air that occupies the airway and is used in the exchange of gases. <1> In an adult person it is about 3250 ml. <2> In each respiratory cycle the air from the dead space is poor in O2. <3> It is the lung area that is not ventilated and therefore does not contain gases. <4> It includes airways and alveoli that do not participate in the exchange of gas with blood.
nursery