Extraembryonic

Question 1

Vascular organ that develops inside the uterus of most pregnant mammals

Answer 1

Placenta

Question 2

Give the parts of placenta

Answer 2

Chorion, amnion, yolk sac, allantois, umbilical cord

Question 3

Serves as vehicle for nutritional and excretory exchange between maternal and fetal circualtion

Answer 3

Placenta

Question 4

Outer layer of chorion

Answer 4

Trophoblast

Question 5

It attaches to the uterus and absorbs nutrients

Answer 5

Chorion

Question 6

Part of placenta that produces hormones

Answer 6

Chorion

Question 7

It forms fetal part of placenta

Answer 7

Chorion

Question 8

Forms fetal part of placenta

Answer 8

Chorion

Question 9

rich in blood vessels that provide
oxygen and nutrients to the embryo; expelled with fetus at
birth

Answer 9

Decidua (Maternal part)

Question 10

Extraembryonic membrane of birds, reptiles, and
mammals

Answer 10

Amnion or amniotic sac

Question 11

Contains fetus + amniotic fluid

Answer 11

Amnion or amniotic sac

Question 12

Protects fetus from injury
Allows for fetal movement
Prevents adherence fetus

Answer 12

Amnion or amniotic sac

Question 13

Maintains body temperature of fetus/embryo

Answer 13

Amnion or amniotic sac

Question 14

Forms outer surface of umbilical cord

Answer 14

Amnion or amniotic sac

Question 15

Enlarges and gradually obliterates the chorionic
cavity
Helps to dilate and clean the cervical canal during
parturition

Answer 15

Amnion of amniotic sac

Question 16

Serves as reservoir for urine and waste

Answer 16

Amnion or amniotic sac

Question 17

Nutrient supply for developing embryo

Answer 17

Yolk sac

Question 18

Disappears at later stages of development

Answer 18

Yolk sac

Question 19

A ventral outgrowth of the embryos of reptiles,
birds, and mammals

Answer 19

Atlantois