A As the uterus contracts, blood flow through the uterine artery is interrupted.
B Fetal blood oxygen levels can be 4–6 kPa (30–45 mmHg) without causing brain damage.
C The fetal brain can use alternative fuels such as ketones if the supply of glucose is interrupted.
D The umbilical arterial pH is the same or higher than the venous pH.
E Most babies are cyanosed at birth