Which of these statements is not true?Select one:a.The right side of the heart never has any oxygenated blood b.In fetal circulation before birth the lungs represent a high resistance to blood flowc.The ductus arteriosus is a bypass vessel connectiond.The prime source of oxygen and food for the unborn is through the umbillical

Which ONE of the following statements regarding the right atrium of the heart is CORRECT?Group of answer choicesIts opening into the right ventricle is guarded by the tricuspid valveIt receives de-oxygenated blood from the pulmonary veinsIt receives de-oxygenated blood via pulmonary arteriesIt forms the base of the heart between the superior and inferior venae cavaeThe ligamentum arteriosium is a remnant of the fetal circulation that is associated with it

Which fetal blood vessels carry oxygen-poor blood to the placenta?Multiple choice question.Hepatic arteryAortaUmbilical arteriesUmbilical veins

28. Before birth in the mammalian fetal heart, the ductus arteriosus joins the pulmonary artery andthe aorta and the foramen ovale joins the two atria. Why do these modifications disappear hoursafter birth?A. The fetal heart is not yet strong enough to sustain a normal circulation.B. Development of the beating heart is one of the last steps in the maturation of the fetus.C. The pulmonary circulation is bypassed because the fetus is not breathing in the womb.D. Maternal hormones suppress the competing infant circulation via the placenta.E. They act as safety valves to relieve the pressure of the viscous amniotic fluid on the fetal heart.

QUESTION 33Which statement is true? A. Veins always take blood away from the heart so always carry oxygenated blood B. Veins always take blood TOWARDS the heart so always carry deoxygenated blood C. Arteries always take blood away from the heart so always carry oxygenated blood D. Arteries always take blood away from the heart but do NOT always carry oxygenated blood

The umbilical arteries carryMultiple Choiceoxygen-rich blood to the developing fetus.oxygen-rich blood to the placenta.oxygen-poor blood to the developing fetus.oxygen-poor blood to the placenta.oxygen-rich blood to the mother.