Question

To which layer of the uterus does embryo attach?

Select one:

a. perimetrium

b. myometrium

c. endometrium

d. cervix

e. fundus

Umbilical cord has

Select one:

a. two umbilical veins and one umbilical artery

b. two umbilical arteries and one umbilical vein

c. two umbilical arteries and two umbilical veins

d. one umbilical artery and one umbilical vein

Human chorionic gonadotropin (hCG) is released by

Select one:

a. uterine tube

b. trophoblast cells

c. endometrium

d. ovaries

e. vagina

Answer 1

To which layer of the uterus does embryo attach? The correct answer is c. endometrium.

Reason:The inner epithelial layer of the uterus is the endometrium that also has mucous membrane along with it.There is a functional layer of the endometrium to which the embryo implants.

Umbilical cord has. The correct answer is b. two umbilical arteries and one umbilical vein.

Reason:The umbilical cord consists of 2 umbilical arteries and one umbilical vein that is buried in the Wharton's jelly.The umbilical vein tranfers oxygenated and nutrient supplemented food from placenta to embryo and the umbilical arteries carry deoxygenated and nutrient less blood from embryo to placenta.

Human chorionic gonadotropin (hCG) is released by b.trophoblast cells

Reason :Trophoblase cells are the cells that are a part of outer layer of blastocyst.It forms 2 layers known as inner cytotrophoblast and outer synchiotrophoblast. The outer synchiotrophoblast layer secretes hCG.