One Minute Embryology

From Embryology
Revision as of 18:55, 9 May 2016 by Z8600021 (talk | contribs) (Human Face and Palate)
Embryology - 15 Dec 2019    Facebook link Pinterest link Twitter link  Expand to Translate  
Google Translate - select your language from the list shown below (this will open a new external page)

العربية | català | 中文 | 中國傳統的 | français | Deutsche | עִברִית | हिंदी | bahasa Indonesia | italiano | 日本語 | 한국어 | မြန်မာ | Pilipino | Polskie | português | ਪੰਜਾਬੀ ਦੇ | Română | русский | Español | Swahili | Svensk | ไทย | Türkçe | اردو | ייִדיש | Tiếng Việt    These external translations are automated and may not be accurate. (More? About Translations)

Introduction

Dr Mark Hill
One-minute.gif

These are a set of quick introductory videos with audio commentary designed to get students to begin to think about specific embryology topics. Videos have also been posted on UNSW theBox and YouTube Embryology channel. This page is still under development in 2016.


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 | YouTube

Thebox-logo.png YouTube-logo.png

Human Timeline

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


QR-Human Timeline.png
Links: original movie page | UNSW theBox | YouTube | 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.



QR-Endoderm Movie.png
Links: original movie page | UNSW theBox | BGDB lecture | BGDB practical | Gastrointestinal Tract Development


Human Face and Palate

Here is a quick description of the embryonic events in the human face and palate development.


QR-Human Timeline.png
Links: original movie page | UNSW theBox | YouTube
Audio Script  
Hi there,

Lets look at head and palate development between week 5 to 9.

This is a ventrolateral view of the human head in week 5.

The primitive oral cavity is located on the ventral surface.

Beneath it (oral cavity) are the large mandibular processes of the first arch.

Beside it (oral cavity) are the small maxillary processes of the first arch.

Above it (oral cavity) are the nasal parts of the large frontonasal process.

The maxillary and FNP together form the upper lip and palate.

The second view is in week 7 showing the oral cavity roof.

The palatal shelves extend from the 2 maxillary processes.

The animation runs forward to week 9 when they fuse together.

Lets watch this again looking at the fusion of the palatal shelves with the midline nasal septum.

The third view shows the anterior view of the shelves and septum fusing in week 9.

External Links

External Links Notice - The dynamic nature of the internet may mean that some of these listed links may no longer function. If the link no longer works search the web with the link text or name. Links to any external commercial sites are provided for information purposes only and should never be considered an endorsement. UNSW Embryology is provided as an educational resource with no clinical information or commercial affiliation.



Cite this page: Hill, M.A. (2019, December 15) Embryology One Minute Embryology. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/One_Minute_Embryology

What Links Here?
© Dr Mark Hill 2019, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G