BGDA Practical - Fertilization to Implantation

From Embryology


We will study human development over a series of 3 practical classes spanning the overall human prenatal developmental timecourse. In terms of Embryology in this current course, there will be an additional lecture on heart development and a practical on the extra-embryonic tissues formed from the conceptus (placenta and embryonic membranes).

Practical 3: Oogenesis and Ovulation | Gametogenesis | Fertilization | Early Cell Division | Week 1 | Implantation | Week 2 | Extraembryonic Spaces | Gastrulation | Notochord | Week 3

  Practical 3 - Fertilization to Implantation   Practical 6 - Implantation to 8 Weeks   Practical 12 - Fetal Period
Practical 14 - Placenta and Fetal Membranes

Practical - Fertilization to Implantation

Early development overview.


This laboratory is an introduction to the earliest event in development, from fertilization of the ovum (egg) by sperm through to implantation.

Key Concepts

Links to glossary or external resources.

Gonad, gametogenesis, ovary, testis, menstrual cycle, oocyte (oogenesis), spermatozoa (sperm) (spermatogenesis), sperm morphology/motility, meiosis/mitosis, follicle development, ovulation, zona pellucida, polar body, menstrual cycle, fertilization, post-fertilization changes, corpus luteum, zygote, morula, blastocyst, inner cell mass (embryoblast), trophoblast, implantation, gestational age GA, ectopic pregnancy, abnormal development.

Key Reading

  • BGDA Practical Class Notes | Online version
  • The Developing Human: Clinically Oriented Embryology. Moore & Persaud Chapter 1-4
  • Human Embryology, WJ. Larsen Chapter 1, 2, 3

Online Practical Help

  1. Online Practical Pages contain movies (MP4) that work better using the Firefox browser on your desktop (Internet Explorer may crash)
  2. Menu this current page is linked as Practical 3 on every page on this current practical.
  3. Work through the series of linked online resources with the demonstrator (listed in order after the green BGD icon on each page)
  4. Online Page Organisation the small green BGD icon is the list of practical pages.
  5. Page Content has a series of images, text and movies down the page in sequence, a list of terms and a link to a Glossary.
  6. Highlighted words within the page text link to the glossary (brief description) or specialised pages (detailed description) on that topic, all additional pages and resources are always shown as "Links:"
  7. Interactive Component included at the bottom of the content on several practical pages, is a brief quiz to test your knowledge.
  8. External Links there are links on some pages which may take you to other places outside the current Practical (navigate carefully).
  9. Only Examinable is the content on the lab pages above additional information.
  10. Finished when we have reached and discussed Week 3 Overview.


Embryo logo Hill, M.A. (2020). UNSW Embryology (20th ed.) Retrieved May 28, 2024, from
The Developing Human, 10th edn.jpg Moore, K.L., Persaud, T.V.N. & Torchia, M.G. (2015). The developing human: clinically oriented embryology (10th ed.). Philadelphia: Saunders.(links only function with UNSW connection)

Chapter 1 Introduction to the Developing Human

Chapter 2 First Week of Human Development

Chapter 3 Second Week of Human Development

Chapter 4 Third Week of Human Development

Larsen's human embryology 5th ed.jpg Schoenwolf, G.C., Bleyl, S.B., Brauer, P.R., Francis-West, P.H. & Philippa H. (2015). Larsen's human embryology (5th ed.). New York; Edinburgh: Churchill Livingstone.(links only function with UNSW connection)

Chapter 1 Gametogenesis, Fertilization, and First Week

Chapter 2 Second Week: Becoming Bilaminar and Fully Implanting

Chapter 3 Third Week: Becoming Trilaminar and Establishing Body Axes

Practical 3: Oogenesis and Ovulation | Gametogenesis | Fertilization | Early Cell Division | Week 1 | Implantation | Week 2 | Extraembryonic Spaces | Gastrulation | Notochord | Week 3


BGDA: Lecture 1 | Lecture 2 | Practical 3 | Practical 6 | Practical 12 | Lecture Neural | Practical 14 | Histology Support - Female | Male | Tutorial

Glossary Links

Glossary: A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Numbers | Symbols | Term Link

Cite this page: Hill, M.A. (2024, May 28) Embryology BGDA Practical - Fertilization to Implantation. Retrieved from

What Links Here?
© Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G