During life in utero,oxygenation of the fetus occurs through transplacental gas exchange.When birth occurs,four factors combine to stimulate the respiratory centre in the medulla.The initiation of respiration then follows.Which of the following contributes to the dynamic sequence of events that occur with the infants' first breath?
A) Warm air temperature
B) Oxygen pressure increases
C) Carbon dioxide pressure decreases
D) Arterial pH decreases

Question

Quizplus · Accepted Answer

Arterial pH drops and contributes to the initiation of respirations.Cool air,not warm,contributes to initiation of respirations.Oxygen pressure decreases.Carbon dioxide pressure increases.

During Life in Utero,oxygenation of the Fetus Occurs Through Transplacental