The human yolk sac size reflects involvement in embryonic and fetal growth regulation.
Henriette Odland KarlsenSynnøve L JohnsenSvein Arvid RasmussenGro TraeHilde M T ReistadTorvid KiserudPublished in: Acta obstetricia et gynecologica Scandinavica (2018)
The human yolk sac is involved in the regulation of embryonic growth, but contrary to our hypothesis, the yolk sac has a compensatory capacity, being larger when the mothers are smaller; and the effect can be traced on fetal size at 24 weeks of gestation.