1. When the neonate is born and the umbilical cord is tied, which of the followi
ID: 178475 • Letter: 1
Question
1. When the neonate is born and the umbilical cord is tied, which of the following happens?
A.The venous return increases
B.The pulmonary hydrostatic pressure increases
C.The pressure in the left atrium increases
D.The pressure in the ductus arteriosus increases
2.
In the fetus, there are four shunts for blood flow. What is the name of the shunt from the pulmonary artery to the aorta?
A.Foramen ovale
B.Ductus venosus
C.Ductus arteriosus
D.Umbilicus
3.
Which of the following plays a role in maintaining pulmonary vascular tone in the fetus?
A.Endothelin and thromboxane
B.Bradykinin and nitric oxide
C.Estradiol
D.Chorionic gonadotropin
In the fetus prior to birth, where is the partial pressure of oxygen highest in the circulatory system?
A.The right ventricle
B.The left ventricle
C.The umbilical vein
D.The carotid artery
Oxygenated blood from the placenta enters the fetus via which vessels?
A.The umbilical vein
B.The umbilical artery
C.The superior vena cava
D.The ductus arteriosus
he fact that the pO2 in the fetus is low is not problem to normal development. Why?
A.Red blood cells in the fetus bind less hemoglobin than in the mother
B.Red blood cells in the fetus bind more hemoglobin than in the mother
C.Red blood cells in the fetus don’t bind hemoglobin
D.Hematocrit is more important in the fetus than hemoglobin
Explanation / Answer
1. When the neonate is born and the umbilical cord is tied, which of the following happens?
A.The venous return increases
B.The pulmonary hydrostatic pressure increases
C.The pressure in the left atrium increases
D.The pressure in the ductus arteriosus increases-answer
2.
In the fetus, there are four shunts for blood flow. What is the name of the shunt from the pulmonary artery to the aorta?
A.Foramen ovale
B.Ductus venosus
C.Ductus arteriosus---answer
D.Umbilicus
3.
Which of the following plays a role in maintaining pulmonary vascular tone in the fetus?
A.Endothelin and thromboxane answer
B.Bradykinin and nitric oxide
C.Estradiol
D.Chorionic gonadotropin
In the fetus prior to birth, where is the partial pressure of oxygen highest in the circulatory system?
A.The right ventricle
B.The left ventricle
C.The umbilical vein-answer
D.The carotid artery
Oxygenated blood from the placenta enters the fetus via which vessels?
A.The umbilical vein -answer
B.The umbilical artery
C.The superior vena cava
D.The ductus arteriosus
he fact that the pO2 in the fetus is low is not problem to normal development. Why?
A.Red blood cells in the fetus bind less hemoglobin than in the mother
B.Red blood cells in the fetus bind more hemoglobin than in the mother-answer
C.Red blood cells in the fetus don’t bind hemoglobin
D.Hematocrit is more important in the fetus than hemoglobin
=============================================================
the cutting of the umbilical rope taking after birth, the placental low resistance region additionally vanishes and the fringe resistance increments in the systemic course. The weight in the aorta is currently higher than that in the truncus pulmonalis and the right-left shunt by means of the ductus arteriosus that is available before birth is pivoted into being a left-right shunt. The pO2 weight in the aorta increments since the blood is presently oxygenated specifically in the child's lungs. This expansion in pO2 triggers a compression of the smooth musculature in the mass of the ductus arteriosus and subsequently to a practical seal.
Following a couple of weeks or months this shunt by means of the ductus arteriosus is absolutely decimated and the remainder is known as the ligamentum arteriosus.
=========================
The umbilical vein is a vein display amid fetal improvement that conveys oxygenated blood from the placenta into the developing baby. The circulatory strain inside the umbilical vein is roughly 20 mmHg
===========
Fetal hemoglobin, : it is the fundamental oxygen transport protein in the human hatchling amid the most recent seven months of improvement in the uterus and endures in the infant until approximately 6 months old. Practically, fetal hemoglobin contrasts most from grown-up hemoglobin in that it can tie oxygen with more prominent liking than the grown-up shape, giving the creating hatchling better access to oxygen from the mother's circulation system.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.