User:Z3216889: Difference between revisions

From Embryology
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--[[User:Z3216889|3216889]] 23:14, 11 August 2010 (UTC)
--[[User:Z3216889|3216889]] 23:14, 11 August 2010 (UTC)


--[[User:Z3216889|Jackson Yim]] 23:10, 18 August 2010 (UTC)
--[[User:Z3216889|3216889]] 23:10, 18 August 2010 (UTC)


This is an internal link: [[2010_Lecture_2|Cell Division Lecture]]
This is an internal link: [[2010_Lecture_2|Cell Division Lecture]]

Revision as of 22:45, 25 August 2010

Attendance

--3216889 23:44, 28 July 2010 (UTC)

--3216889 23:23, 4 August 2010 (UTC)

--3216889 23:14, 11 August 2010 (UTC)

--3216889 23:10, 18 August 2010 (UTC)

This is an internal link: Cell Division Lecture

This is an external link: SMH

Sperm meets egg

New sub heading

Now I can edit a subheading section

Picture

Early zygote.jpg

Lab Questions

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

They secrete hCG (human chorionic gonadotropin) to prevent the disintegration of the corpus luteum to support the ongoing pregnancy.


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

It secretes progestogen to maintain the endometrium of the uterus thus preventing the continuation of the mestrual cycle.

Lab 3 Questions

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

Stages 7-13

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

wk3:0.7mm diameter wk4: 3-5mm length

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

Cranial neuropore closes at about 24 days and caudal neuropore closes at about 26 days

Lab 4 Questions

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

Vitelline, placental vessels and common cardinal vein

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

Vitelline artery will contribute to adult GIT arteries and vitelline vein would contribute to the adult portal system

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

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?

hematopoietic stem cells