Chemoreceptor Responses in the Fetus

During parturition, the fetus is squeezed through the birth canal and delivered to a cold extrauterine environment, which is associated with an increase in the oxygen level. Many studies have documented the severity and the duration of asphyxia associated with delivery (22,23). However, newborn mammals are more resistant than the adult to hypoxia/asphyxia (24,25). This transition is associated with major 

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