Practice 4 Embryology I
1. Highlight the principal differences between mitosis and meiosis, and apply the
principles on spermatogenesis and oogenesis.
2. Define the following terms: capacitation, acrosomal reaction, and cortical reaction.
3. Describe an oocyte during ovulation (size, stage of meiosis, presence of zona
pellucida, cumulus oophorus).
4. Graphically schematize and describe in detail the stages of early embryogenesis from
fertilization to implantation (from zygote to blastocyst).
5. Graphically schematize and describe in detail the development of embryo and
extraembryonic tissues in the 2nd
week of development (identify hypoblast and epiblast
layers)
6. Describe and graphically schematize development of embryo and extraembryonic
tissues in the 3rd
week of development (describe development of mesoderm and
endoderm).
7. Describe and graphically schematize development of chorda dorsalis (notochord) from
the primitive pit, through the notochordal process and the canal of Lieberkühn.
8. Why is the notochord so important during development?
Recommended study materials: Presentations from practices and lectures, Atlas of Cytology
and Embryology (online), Langman’s medical embryology, Developing human.