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==Lab Week 4==
==Lab Week 4==
1.What Carnegie stages occur during week 3 and week 4?
Satge 7 to Stage 13
2.What is the change in overall embryo size form the beginning of week 3 to the end of week 4?
2.6-4.6mm CRL (Stage 13, 3-5mm - Stage 7, 0.4mm)
3.Approximately when do the cranial (anterior) and caudal (posterior) neuropores close in the human embryo?
Cranial neuropore - Carnegie Stage 11, approx. 24 days (takes only a few hours to close)
Caudal nueropore - Carnegie Stage 12, approx. 26 days (takes about a day to close)

Revision as of 21:42, 12 August 2010

Lab Attendance

--z3288088 23:44, 28 July 2010 (UTC)

--z3288088 23:03, 4 August 2010 (UTC)

--z3288088 23:05, 11 August 2010 (UTC)

Lab Week 2

Early zygote.jpg

Internal link: Cell Division Lecture

External link: SMH

Renamed internal link: Not Fertilization

Lab Week 3

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

Human Chorionic Gonadotropin (hCG)

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

Progesterone

Lab Week 4

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

Satge 7 to Stage 13

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

2.6-4.6mm CRL (Stage 13, 3-5mm - Stage 7, 0.4mm)

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

Cranial neuropore - Carnegie Stage 11, approx. 24 days (takes only a few hours to close)

Caudal nueropore - Carnegie Stage 12, approx. 26 days (takes about a day to close)