Final answer:
Overt cord prolapse is a visible or palpable umbilical cord descent through the cervix, often seen after membranes rupture, while funic cord prolapse refers to the cord preceding the fetus, yet not visible or palpable, as in occult prolapses.
Step-by-step explanation:
Overt cord prolapse and funic cord prolapse are both obstetric emergencies that occur when the umbilical cord, which supplies the fetus with oxygen and nutrients, slips through the cervix into the vagina before the fetus descends during labor. In an overt cord prolapse, the cord prolapse is visible or palpable after the rupture of membranes and before the delivery of the fetus. It is a more obvious situation as the cord is either present at the vulva, or can be felt through the vagina by a clinician. Funic cord prolapse, on the other hand, is less apparent, occurring when the umbilical cord precedes the fetal presenting part but is not visible or palpable at the vulva. This can happen when the cord lies alongside the baby within the membranes, which is considered an occult prolapse. Both conditions are highly dangerous and can lead to fetal hypoxia or death if not managed promptly.