From Embryology


--z3254753 00:51, 5 August 2010 (UTC)

--z3254753 23:14, 11 August 2010 (UTC)

--z3254753 23:10, 18 August 2010 (UTC)

--z3254753 23:02, 25 August 2010 (UTC)

--z3254753 23:11, 2 September 2010 (UTC)

also attended lab on the 16th Sept, I forgot to sign attendance

--z3254753 23:27, 22 September 2010 (UTC)

--z3254753 23:06, 29 September 2010 (UTC)

--z3254753 00:02, 7 October 2010 (UTC)

--z3254753 22:14, 13 October 2010 (UTC)

--z3254753 22:08, 20 October 2010 (UTC)

I attended every lab this semmester

Cell Division

external link SMH

fertilisation from homepage


Early zygote.jpg

Lab 2 Questions

1. What factor do the synctiotrophoblast cells secrete to support the ongoing pregnancy?

Progesterone- maintains integrity of uterine lining. hCG (human chorionic gonadotrophin) - prevents degeneration of corpus luteum. HPL (human placental lactogen) - consists of 190 amino acids. It modifies metabolic state of mother during the pregnancy to facilitate energy supply to the fetus

2. What does the corpus luteum secrete to prevent continuation of the menstrual cycle?

Estrogen and progestogen, which are steroid hormones.

--z3254753 12:12, 11 August 2010 (UTC)

--z3254753 12:13, 11 August 2010 (UTC)

Lab 3 Questions

1. What Carnegie stages occur during week 3 and week 4?

Stages 7-9 during week 3 and stages 10-13 in week 4.

2. What is the change in overall embryo size form the beginning of week 3 to the end of week 4?

0.4mm to 3.5mm

3. Approximately when do the cranial (anterior) and caudal (posterior) neuropores close in the human embryo?

At stage 11 (about 24 days) the cranial neuropore closes within a few hours. At stage 12 (about 26 days), the caudal neuroporecloses over a day.

--z3254753 08:22, 18 August 2010 (UTC)

Lab 4 Questions

1. Name the vessels that drain into the sinus venosus?

3 pairs of veinds drain into the sinus venosus, vitelline veins, umbilical veins, and cardinal veins (anterior, common and posterior).

2. What is the fate of the vitelline artery and vitelline vein?

Contribute to the liver of the human adult.

3. Name the 4 layers that constitute the placental barrier?

The four layers are the syncitiotrophoblast, cytotrophoblast, villi connective tissue and fetal capillary endothelium.

4. What stem cells are found in abundance, and may be harvested from the placenta for therapeutic uses?

Haemopoietic stem cells.

--z3254753 08:06, 25 August 2010 (UTC)

Lab 5 Questions

1. What is the origin of the gastrointestinal tract smooth muscle?

The mesoderm (splanchnic)

2. At what Carnegie stage does the buccopharyngeal membrane begin to break down?

During the fourth week, at stage 11.

3. Identify the lung developmental stage in late embryonic to early fetal period.

Stage 22

4. In premature infant birth, which respiratory cell type may not have fully developed?

Type 2 alveolar cells

Lab 7 Questions

Briefly; what is a myotube and how is it formed?

multinucleated, but undifferentiated contractile apparatus (sarcomere). It is formed by the fusing together of myoblasts.

What changes would I expect to see in the muscle fibre types in my legs if I:

a) Suffered a spinal cord injury - wasting away of muscle- muscle distrophy

b) Took up marathon running - a greater percentage of slow twitch fibres

--z3254753 23:15, 22 September 2010 (UTC)

Lab 10 Questions

1.Development of which endocrine organ is affected by low dietary iodine?


2.What are the affects of this deficiency on other non-endocrine system development?

Atypical speech and impaired hearing, low body weight, mental retaration as well as miscarriage

3.At approximately what week in development do many endocrine organs appear to begin their function?

Around week 10

Lab 12 Questions

1. During which trimester does fetal length change the most and when does fetal weight change the most?

Fetal length changes most in the second trimester.

Fetal weight changes most in the third trimester.

2. What is the name of the theory that links postnatal health with prenatal development?

The fetal origins hypothesis

3.Which hormone initiates and maintains labour during birth and where does it come from?


Peer Assessments


The format of this page is excellent, there is a good balance of figures, tables and text. The clear and concise language consistent throughout makes the page accessible for anyone reading.

The project is great, maybe throw in a graph somewhere? It's a good visual tool that I think would compliment the information you have effectively. This is more of a suggestion than a critique, nice work.

--z3254753 16:40, 21 September 2010 (UTC)


This project is extremely well done. It seems a great effort has gone into proper referencing which also gives the impression of a thoughtful attempt. The balance of information mediums is great and the logical flow of ideas when reading through each section is perfect. Suggestion: possibly more pictures or a flowchart of the procedure itself?

Well done :)

--z3254753 16:55, 21 September 2010 (UTC)


Great work guys, this is a well done project. I feel like I am able to learn about this subject effortlessly as I read it through.

The diagrams in the table are great. The project page has been set out really well too, there is a great balance of text and pictures. Perhaps some more figures would fit in well with what is already there. Some sections seem to be a lot bigger than others, perhaps more technical info can be given for "Disorders and Abnormalities Found by PUBS" and "The Future of Percutaneous Umbilical Cord Sampling". An awesome project, well done.

--z3254753 17:09, 21 September 2010 (UTC)

Fetal Fibronectin

Hey guys good work with this assignment. The first thing I notice was there are not as many pictures as there are in other pages. However, what was there was relevant and easily readable.I think some more detail could be given in a few sections would help convey a more technical side of this subject matter.

--z3254753 17:20, 21 September 2010 (UTC)

Maternal serum alpha-fetoprotein

This is a great project filled with lots of information. It is clearly well researched and the organisation of the page itself is sensible in the logical order of sub headingsand the flow of ideas.

I don't mind seeing a picture aligned to the left :P. Maybe you could use figures the break up the text a bit more? Other than that great work guys, this is excellent and gives a very 'scienfitic feeling'presentation of this topic

--z3254753 17:26, 21 September 2010 (UTC)