RT Book, Section
A1 Cargill, Yvonne
A2 Posner, Glenn D.
A2 Dy, Jessica
A2 Black, Amanda
A2 Jones, Griffith D.
SR Print(0)
ID 1106377961
T1 The Umbilical Cord
T2 Oxorn-Foote Human Labor & Birth, 6e
YR 2015
FD 2015
PB McGraw-Hill Medical
PP New York, NY
SN 9780071740289
LK obgyn.mhmedical.com/content.aspx?aid=1106377961
RD 2024/04/19
AB The  umbilical  cord  links  the  fetus  to  the  placenta  and  is  the  fetal  lifeline.  The  cord  is  between  30  and  60  cm  in  length,  the  average  being  50  cm.  It  is  covered  on  the  outside  by  amnion,  which  blends  with  the  fetal  skin  at  the  umbilicus.  On  the  inside  of  the  cord  is  the  thick  myxomatous  Wharton  jelly.  Through  the  jelly,  protected  by  it,  run  the  umbilical  vessels,  one  vein  and  two  arteries,  in  a  spiral  arrangement.  The  circulation  is  the  reverse  of  the  adult  in  that  the  vein  carries  the  oxygenated  blood  to  the  fetus,  and  the  arteries  bring  venous  blood  back  to  the  placenta.