Match each term with its corresponding description or definition.
-Structure that becomes a fluid-filled, shock-absorbing structure sometimes called the "bag of waters"
A)Yolk sac
B)Fraternal twins
C)Zygote
D)Histogenesis
E)Amniotic cavity
F)Identical twins
G)Morula
H)Primary germ layers
I)Blastocyst
J)Placenta

Question

Quizplus · Accepted Answer

The amniotic cavity is the structure that fills with fluid and provides shock absorption for the developing embryo/fetus.

Answer: F
 Identical twins form from a single fertilized egg that divides into two embryos.

Answer: C
 The zygote is the fertilized egg that results from the fusion of a sperm cell and an egg cell.

Answer: D
 Histogenesis refers to the process by which the three primary germ layers give rise to the different types of tissue in the developing embryo.

Answer: I
 The blastocyst is the stage of development after the morula, in which the embryo forms a fluid-filled cavity and separates into two distinct cell types: the inner cell mass and the outer trophoblast.

Answer: J
 The placenta is an organ that develops in the uterus during pregnancy, and serves as a site of exchange of nutrients, gases, and wastes between the mother's bloodstream and the developing embryo/fetus.

Possible distractors:
- A: The yolk sac is an early structure that forms from the zygote and plays a role in early nourishment of the developing embryo.
- B: Fraternal twins result from the fertilization of two separate eggs by two separate sperm.
- G: The morula is an early stage of development in which the fertilized egg forms a solid ball of cells.
- H: The primary germ layers (ectoderm, mesoderm, and endoderm) are the three distinct cell layers that form during gastrulation and give rise to all of the body's tissues and organs.

Match Each Term with Its Corresponding Description or Definition