Introduction
This lecture is an introduction to the weeks of
development following implantation including: gastrulation,
neural tube, somite, cardiovascular development. The
intraembryonic spaces (coelom) and the primitive placenta
(villi) also continue to develop. The key components covered
are: bilaminar embryo, trilaminar embryo, yolk sac, amniotic
cavity, chorionic cavity, connecting stalk, epiblast,
hypoblast, ectoderm, endoderm, mesoderm, extraembryonic
mesoderm, gastrulation, primitive streak, primitive pit,
notochord.
The lecture slides and textbook alone contain enough
information as an introduction to the subject for this level
of study. If you are interested in further reading, I have
also included below links to more detailed textbooks with
further information and images. Please note this additional
information is not necessarily examinable, but may be useful
if you have not previously studied biology.
The link below to lecture slides allows you to open and
view the slides in your web browser or download the PDF
document for later viewing/printing. The online text
Developmental
Biology links listed below are worth reviewing for
this lecture.
Lecture Slides
Link to lecture slides allows you to open and view the slides in your web
browser or download the PDF document for later viewing/printing. Download
Acrobat Reader 6.0
Lecture 4 1slide/page (view only) (xx pages, x Mb)
Lecture 4 4slides/page (print) (xx pages, x Kb)
Lecture 4 6slides/page (print) (xx pages, x Kb)
Lecture 4 outline (print no images) (xx pages, x Kb)
Online Resources
Laboratory 1 will introduce several online resources that will be used throughout
the session. Listed Below are links to some of these resources.
UNSW Embryology
Week 1 Notes These are not the notes
that refer to the first week of this course, but the first week of development
which will be covered over the first few weeks of this course.
Cell Division
Gamete Formation Laboratory
2 Introduction to Lab 2 using Hypercell.
Embryo Images Online
These are scanning electron micrographs of early embryonic development. These
images are not relevant to the first few weeks of lectures.
Larsen Textbook Online
Quick Links
Online Books
Developmental Biology
Developmental Biology. 6th ed. Gilbert, Scott F. Sunderland
(MA): Sinauer Associates, Inc.; c2000.
Below are listed links that relate to this Lecture from the textbook "Developmental
Biology" which is available free online. You can either click the provided
links or do your own search using the search link.
Fertilization:
Beginning a new organism
The
Egg
Sperm
Plant
Fertilization
Search
Results- Fertilization
Search
Developmental Biology
Search
Developmental Biology
Molecular Biology of the Cell
3rd ed. Alberts, Bruce; Bray, Dennis; Lewis, Julian; Raff,
Martin; Roberts, Keith; Watson, James D. New York and London: Garland Publishing;
c1994.
Below are listed links that relate to this Lecture from the textbook "Molecular
Biology of the Cell" which is available free online. You can either click
the provided links or do your own search using the search link.
Search
Molecular Biology of the Cell
MBoC Search Results(click
text link below to see search results)
Cell
Division Cycle
The
Mechanics of Cell Division
Meiosis
Germ
Cells and Fertilization
MBoC Images
The
cell-division cycle
The
M phase of the cell cycle
Comparison
of meiosis and normal cell division
Online Mendelian Inheritance in Man
OMIM
Comments
This second lecture looks at a key moment in development, generation of gametes (egg and sperm) and fertilization.
Both these processes are very complex and cannot be covered in detail in a single lecture, the associated lab
will give additional information.
Fertility is a complex issue, with enormous scientifc effort in its study and regulation.
Methods of birth control and In vitro fertilization being the most obvious.
Note that fertilization alone "does not an embryo make", as up to 70% of fertilized eggs do not go on to develop into a fetus.
Please email Dr Mark Hill if you wish to make a comment about this current project.
