For the FIRST THREE questions below, indicate how the central and peripheral che

Question

For the FIRST THREE questions below, indicate how the central and peripheral chemoreceptors acutely respond to the indicated respiratory challenge by checking the appropriate boxes. Fo question, indicate the state of the chemoreceptors to a persistent challenge Hypoxemia (low arterial P02) from inspiration of a low oxygen gas: Hypercapnia (elevated arterial PC02) from increased CO2 production: Metabolic alkalosis (elevated arterial pH) from ingestion of a base: Prolonged Metabolic alkalosis (elevated arterial pH) from ingestion of a base:

Explanation / Answer

7-1.. In hypoxemia, central and peripheral chemoreceptors increase ventilation.

7-2.. In hypercapnia also, central and peripheral chemoreceptors increase ventilation.

7-3.. In metabolic alkalosis, central chemoreceptors increase ventilation; peripheral chemoreceptors decrease ventilation.

7-4.. In prolonged metabolic alkalosis also, central chemoreceptors, increase ventilation; peripheral chemoreceptors after sometime show no effect.

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