While in utero, a fetus swallows many substances that are deposited in the fetal intestinal system as meconium. what problem can arise from this occurrence?

Meconium aspiration Syndrome

This is the multifactorial and complex pathophysiology of newborns who has aspirated meconium into their lungs from meconium-stained amniotic fluid. This includes airway obstruction, foetal hypoxia, infection,pulmonary inflammation, surfatant inactivation,persistent hypertension and apoptosis.

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.