Fetal Circulation Anatomy

During pregnancy the fetal circulatory system works differently than after birth. Instead the fetus obtains oxygen and nutrients from the mother through the placenta and the umbilical cord.

Human Development And Aging Chapter 29 The Fetal Circulation

Choose from 500 different sets of fetal circulation anatomy flashcards on quizlet.

Fetal circulation anatomy. As the newborn begins to breathe and blood pressure in the atria increases this shunt closes. It is usually established in the fetal period of development and is designed to serve prenatal nutritional needs as well as permit the switch to a neonatal circulatory pattern at birth. The fetus is connected by the umbilical cord to the placenta the organ that develops and implants in the mothers uterus during pregnancy.

Goal of fetal circulation give the most highly oxygenated blood to the brain thats why high oxygen blood from ivc doesnt mix much with less oxygenated blood from svc. In animals that give live birth the fetal circulation is the circulatory system of a fetus. Learn fetal circulation anatomy with free interactive flashcards.

A valve associated with this opening prevents backflow of blood during the fetal period. Circulation patterns are clearly established by the fourth week of embryonic life. The term usually encompasses the entire fetoplacental circulation which includes the umbilical cord and the blood vessels within the placenta that carry fetal blood.

Fetal circulation unlike postnatal circulation involves the umbilical cord and placental blood vessels which carry fetal blood between the fetus and the placenta. The advent of breathing an. The fetal circulation differs from normal postnatal circulationmainly because the lungs are not in use.

Through the blood vessels in the umbilical cord. Fetal circulation anatomy all of the respiratory excretory and nutritional requirements of the fetus are supplied for by dissemination across the placenta as an alternative to the fetus organs including the lungs kidneys and gastrointestinal tract. The foramen ovale is an opening in the interatrial septum that allows blood to flow from the right atrium to the left atrium.

Describe the fetal circulation in a developing embryothe heart has developed enough by day 21 post fertilization to begin beating.

Figure Fetal Circulation Image Courtesy S Bhimji Md