Tissue from this organ is collected during a process sometimes used instead of amniocentesis, chorionic villi sampling.
This structure secretes hydroxysteroid dehydrogenase, which helps prevent excess glucocorticoid from inhibiting its growth. Its outermost layers are composed of syncytio- and cytotrophoblast cells, and it contains a high concentration of prostaglandins. This structure produces neurokinin B and notably does not present MHC antigens, allowing it to escape attack from the immune system. It functions in part as an endocrine organ, producing hormones like its namesake lactogen and somatomammotropin, as well as human chorionic gonadotropin. Tissue from this organ is collected during a process sometimes used instead of amniocentesis, chorionic villi sampling. For 10 points, name this organ possessed by all eutherian mammals, which allows for the exchange of nutrients and waste products between a mother and the developing fetus.
This structure secretes hydroxysteroid dehydrogenase, which helps prevent excess glucocorticoid from inhibiting its growth.
{placenta}