Week 1

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Introduction

Key Events of Human Development during the first week (week 1) following fertilization or Clinical week 3 (LMP).


Links: 2009 Lecture - Fertilization | 2009 Lecture - Week 1 and 2 | Oocyte | Spermatozoa | Fertilization

Human-oocyte to blastocyst.jpg

Human-oocyte to blastocyst

Day
Stage
Event
1
Secretory PhaseStage 1 Early zygote.jpg Fertilization, Secretory Phase
2
Stage 2 Stage2.jpg Week1 001 icon.jpg Morula, Blastula
3
  Week1 001 icon.jpg
4
Stage 3 CSt3.jpg Blastocyst Hatching (zona pellucida lost)
5
  CSt3.jpg

Blastocyst (free floating)

6
Stage 4 Adplantation
7
Stage 5 File:2ndwk.jpg

Week 1 Movies

Follicle 001 icon.jpg Fertilization 002 icon.jpg Pronuclear fusion 001 icon.jpg Week1 001 icon.jpg Ovulation icon.jpg Fertilization 001 icon.jpg
Ovulation Fertilization Pronuclear Fusion Week 1 Ovulation in the rabbit Fertilization in the mouse


Embryo Week: Week 1 | Week 2 | Week 3 | Week 4 | Week 5 | Week 6 | Week 7 | Week 8 | Week 9

Carnegie Stages: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | About Stages | Timeline

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, June 1) Embryology Week 1. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Week_1

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