Question

6. Which parts develop from the endoderm? 7. Describe the development of the placenta. 8. Name the four hormones produced by the placenta. 9. Describe the blood circulation routes in the fetus before birth. 10. Explain how monozygotic twins differ from dizygotic twins. Prenatal Care and Adaptations to Pregnancy 1. Identify the major goals of prenatal care. C 2. What is the recommended schedule for prenatal visits in an uncomplicated pregnancy? June 3. How do you calculate the estimated date of delivery (EDD)? Cast 4. List the presumptive signs of pregnancy. They Hune hay Pregnant are

Answer 1

Q. No. 6. Answer :

* Endoderm is the innermost layer from the germ.

* from these internal structures and it's lynings may develops,

* those are respiratory tract,

* digestive tract,

* parts of the urinary system,

* liver, pancreas,

* gallbladder,

* thyroid gland,

* para thyroid gland and

* thymus these are may develops from Endoderm.

Q. No. 8. Answer :

Placenta is one of the endocrine gland , which is present only during in pregnancy.

Four hormones produced by placenta :

* Human chorionic gonado tropin hormones.

* progesterone,

* Estrogen,

* human placental lactogen.

These are the four hormones produced by placenta.

Q. No. 9. Answer :

* Normally fetal circulation is different from the normal human being blood circulation.

* in the fetal circulation two umbilical arteries and one umbilical vein is present.

* the placenta will receives oxygenated blood from the mothers blood circulation through arteries.

* and then through umbilical vein the oxygenated blood will supply to the fetus from placenta.

* like this the blood circulation will taken place to the fetus during pregnancy .

Q. No. 10. Answer :

Monozygotic twins differ from dizygotic twins :

* dizygotic twins develops two separate fertilized eggs,

* and they develops two amniotic sacs, placentas, and supporting structures.

* but monozygotic twins may or may not share the same amniotic sac.

* the fertilized egg devided into two here.