hey can someone tell me which body systems they use (at least 4 or 5) and explain to me what the body system are doing? if that makes sense, sorry if it’s a lot

Anurse is caring for a 42-year-old client who is scheduled for an amniocentesis during the fifteenth week of gestation because of concerns regarding down syndrome. what other fetal problem does an examination of the amniotic fluid reveal at this time?