User:Z3254433
Laboratory attendance
--z3254433 23:44, 28 July 2010 (UTC)
--z3254433 23:16, 4 August 2010 (UTC)
--z3254433 23:13, 11 August 2010 (UTC)
--z3254433 23:09, 18 August 2010 (UTC)
--z3254433 23:14, 25 August 2010 (UTC)
--z3254433 23:24, 1 September 2010 (UTC)
--z3254433 23:18, 15 September 2010 (UTC)
internal link Cell division lecture
external link smh
new sub heading
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Lab 2 Questions
What factor do the synctiotrophoblast cells secrete to support the ongoing pregnancy? human chorionic gonadotropin (hCG).
What does the corpus luteum secrete to prevent continuation of the menstrual cycle? progesterone
Lab 3 Questions
1.What Carnegie stages occur during week 3 and week 4?
During week 1 Carnegie stages 7,8,9 occur and during week 4 carnegie stages 10,11,12,13 occur.
2.What is the change in overall embryo size from the beginning of week 3 to the end of week 4?
From the beginning of week 3 to the end of week 4 the embryo grows from 0.4mm to 3-5mm.
3.Approximately when do the cranial (anterior) and caudal (posterior) neuropores close in the human embryo?
The cranial neuropores close on day 24 and the caudal neuropore closes on day 26.
--z3254433 11:14, 22 August 2010 (UTC)
Lab 4 Questions
1.Name the vessels that drain into the sinus venosus?
Anterior and posterior cardinal veins, umbilical veins, vitelline vein.
2.What is the fate of the vitelline artery and vitelline vein? The vitelline venous system gives rise to the liver sinusoids and portal system.
3.Name the 4 layers that constitute the placental barrier? The 4 layers that constitute the placental barrier are: 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? Mulitpotent cells are found in abundance in the placenta and may be used to grow virtually any type of tissue or replace any type of cell. They may be used to treat disorders such as: Parkinson's and Alzheimer's diseases, auto-immune disorders, stroke, burn recovery, heart disease, type 1 diabetes, multiple sclerosis, cerebral palsy, lupus, muscular dystrophy.
Further info can be found through the following link:
http://www.istemcelli.com/placentalsc.html
Lab 5 Questions
1.What is the origin of the gastrointestinal tract smooth muscle? Splanchnic mesoderm
2.At what Carnegie stage does the buccopharyngeal membrane begin to break down? Stage 11
3.Identify the lung developmental stage in late embryonic to early fetal period. pseudoglandular - week 5 – 17, stage 22 above. Formation of terminal bronchioles.
4.In premature infant birth, which respiratory cell type may not have fully developed? Type II pneumocytes.
--z3254433 06:10, 10 September 2010 (UTC)
