User:Z3224500

Attendance

--Jenny Huang 23:38, 28 July 2010 (UTC)

--Jenny Huang 23:36, 4 August 2010 (UTC)

Search Bookshelf Prenatal Diagnosis

Search Pubmed Now: Prenatal Diagnosis

--z3224500 23:13, 11 August 2010 (UTC)

--Jenny Huang 23:18, 18 August 2010 (UTC)

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

hCG - human chorionic gonadotropin

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

It produces Estrogen and Progesterone

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

Carnegie stages 7-9 occur during week 3 spanning days 15-21 and carnegie stages 10-13 occur spanning days 22-30.

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

From the beginning of week 3 the embryo is about 0.4mm and by the end of week 4 3-5mm.

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

The anterior neuropore closes during carnegie stage 11