One Minute Embryology

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Introduction

Dr Mark Hill

These are a set of quick introductory videos with audio commentary designed to get students to begin to think about specific embryology topics.

They have also been posted on UNSW theBox and YouTube Embryology channel.

These videos run for about 1 minute and are not intended as a detailed description or for use elsewhere.

The first videos relate to undergraduate Medicine phase 1 embryology in BGDA and BGDB.


Links: Medicine | Movies | UNSW theBox

Human Timeline

Here is a quick description of the embryonic events in the human development timeline.


Links: original movie page | UNSW theBox | BGDA lecture | BGDA Prac 3 | BGDA Prac 6 | Embryonic Development | Fetal Development
Audio Script  
Hi there,

Lets look at an overview of human development

Human pregnancy occurs over 9 months.

This is traditionally divided into 3 trimesters each 3 months long.

The first trimester is mainly the embryonic period.

While the second and third trimester is the fetal period of growth.

The embryonic period is divided into 23 “stages” over the first 8 weeks.

After the last menstrual cycle, this period also covers the next 2 and a half missed cycles.

Human pregnancy is measured from this last cycle, while fertilisation occurs around ovulation of the next missed cycle.

A positive pregnancy test can be seen 2 weeks later after fertilisation.

The fertilised oocyte is called a zygote, that divides to form a morula.

Further mitotic division forms a blastocyst.

Forming a bilaminar then trilaminar embryo in week 3.

Looking at events

end of week 1 - blastocyst hatching

week 2 - Implantation in the uterus

week 3 - Key developmental processes

week 4 - the heart and other structures form

Endoderm Development

Here is a quick description of the endoderm events during week 3 and 4 in developing the gastrointestinal tract.


Links: original movie page | UNSW theBox | BGDB lecture | BGDB practical | Gastrointestinal Tract Development

QR-Endoderm Movie.png


Cite this page: Hill, M.A. (2020, February 21) Embryology One Minute Embryology. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/One_Minute_Embryology

What Links Here?
© Dr Mark Hill 2020, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G