Additionally, a large blood vessel that bypasses the lungs while the fetus is in the womb automatically constricts at birth; blood now goes to the lungs, where it can be oxygenated as baby takes its first breath.
Lisaks sellele tõmbub sündimisel automaatselt kokku suur veresoon, mis möödub kopsudest, kuni loode on emakojas; nüüd läheb veri kopsudesse, kus see beebi esimese hingetõmbega hapnikuga rikastatakse.