17 Questions
What is a solid ball of cells that forms about 3 days after fertilization?
Morula
Which structure is a hollow ball of cells that develops and implants into the uterus?
Blastocyst
Where does fertilization usually occur?
Outer third of the oviduct near the ovary
The time from the onset of uterine contractions to the complete dilation of the cervix is the _____ stage of labor.
first
The process of the expulsion of the placenta occurs in the _____ stage of labor.
third
- Which of the following terms refers to a fertilized ovum?
Zygote
- Fraternal twins
are the result of two fertilized eggs.
Identical twins
both A and C
Blood type is an inherited trait; therefore
identical twins must have the same blood type.
The time from maximal cervical dilation until the baby exits through the vagina is the _____ stage of labor.
second
Which of the following is not formed by the ectoderm?
Dermis of the skin
Which of the following is not formed by the endoderm?
Nasal bones
Which of the following is not formed by the mesoderm?
Bladder
The sequence of development for the fertilized egg is
fertilization, zygote, morula, blastocyst, and implantation.
Which of the following is not a function of the placenta?
All of the above are functions of the placenta.
The blastocyst undergoes rapid cell division and is _______________ as the fertilized egg.
the same size
The function of the yolk sac is to
help in the production of blood cells.
Test your knowledge of embryonic development with this multiple-choice quiz. Identify the stages and structures involved in the early development of an embryo.
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