CH 55 - PLACENTA Flashcards
THE PLACENTA HAS 2 COMPONENT:
CHORION FRONDOSUM - FETAL PORTION
DECIDUA BASALIS - MATERNAL PORTION
THIS PERMITS THE EXCHANGE OF OXYGENATED MATERNAL BLOOD WITH DEOXY FETAL BLOOD.
PLACENTA
WHAT IS THE FCTNING UNIT OF THE PLACENTA?
CHORIONIC VILLUS
WHAT IS THE MATERNAL SURFACE CALLED?
BASAL PLATE
WHERE DOES THE FETAL UMBILICAL CIRCULATION ORIGINNATE?
ORIGINATES FROM THE DUCTUS ARTERIOSUS TO THE AORTA WITH DEOXYGENATED BLOOD.
SOME OF THE BLOOD GOES DIRECTLY INTO THE LIVER AND THE REST PASSES THRU THE ______ INTO THE IVC THEN CONTINUES TO THE RT ATRIUM AND CROSSES THROUGH THE ___ INTO THE LT ATRIUM.
DUCTUS VENOSUS
FORAMEN OVALE
THE BLOOD BYPASSES THE LUNGS THRU THE ____ INTO THE AORTIC ARCH.
DUCTUS ARTERIOSUS
THIS REFERS TO THE UMBILICAL INSERTION INTO THE MARGIN OF THE PLACENTA, WITHIN 100 OF THE EDGE.
BATTLEDORE PLACENTA
THIS REFERS TO AN UMBILICAL CORD THAT INSERTS ON THE MEMBRANES.
VELAMENTOUS PLACENTA
BEST SHOWN WITH COLOR DOPPLER
THIS IS RESPONSIBLE FOR THE TRANSFER OF NUTRIENTS UNTIL THE PLACENTA TAKES OVER.
YOLK SAC
A NML PLACENTA WILL BE WHERE?
ON THE ANTERIOR, FUNDAL, OR POSTERIOR WALL
THIS CONDITION HAPPENS WHEN THE PLACENTA IMPLANTS TO CLOSE TO THE INTERNAL OS.
PLACENTA PREVIA
BY _____WEEKS THE AMNION & CHORION FUSE AND ARE NO LONGER SEEN.
16 WEEKS
_____ & ____ SERVE AS A PROTECTIVE BUFFER FOR THE EMBRYO & FETUS.
AMNIOTIC SAC & FLUIDS
THE AMNIOTIC SAC & FLUIDS ALSO ASSIST IN REGULATING _____.
FETAL BODY TEMPERATURE
