User:Z3216889: Difference between revisions

Revision as of 15:46, 17 August 2010

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

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

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

This is an internal link: Cell Division Lecture

This is an external link: SMH

Now I can edit a subheading section

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.

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

@@ Line 29: / Line 29: @@
 It secretes progestogen to maintain the endometrium of the uterus thus preventing the continuation of the mestrual cycle.
+==Lab 3 Questions==
+) What Carnegie stages occur during week 3 and week 4?
+Stages 7-13
+) 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
+) 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