Chap. 10

Question 1

What forms in the mesoderm?

Answer 1

Skeletal, urinary, circulatory, and reproductive organs.

Question 2

What forms in the ectoderm?

Answer 2

CNS, special senses, skin, and glands.

Question 3

What forms in the endoderm?

Answer 3

Respiratory system, liver, pancreas, and digestive system

Question 4

What is hCG?

Answer 4

A hormone: preserves the corpus luteum and its progesterone production to protect the lining if the uterus; basis for pregnancy tests.

Question 5

What is Human placental lactogen (hPL)?

Answer 5

A hormone that regulates fetal/maternal metabolism. Develops maternal breast for lactation, and increases availability of insulin to baby.

Question 6

What role does estrogen play in pregnancy?

Answer 6

Enlargement of breasts, uterus, and external genitalia. Stimulates myometerial contractility.

Question 7

What role does progesterone play in pregnancy?

Answer 7

Maintains endometrium, decreases contractions, stimulates metabolism and breast development.

Question 8

What does the ductus venosus connect?

Answer 8

Umbilical vein to inferior vena cava.

Question 9

What does the ductus arteriousus connect?

Answer 9

Main pulmonary artery to the aorta.

Question 10

What is the foramen ovale?

Answer 10

Opening between the left and right atrium.