User:Z3305561: Difference between revisions
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--[[User:Z3305561|Navneet Ahuja]] 23:04, 11 August 2010 (UTC) | --[[User:Z3305561|Navneet Ahuja]] 23:04, 11 August 2010 (UTC) | ||
Question for lab 3 | |||
What Carnegie stages occur during week 3 and week 4? | |||
Stages 7 to 9 in week 3 where 3 major importance was given to gastulation,placentation and notochord formation | |||
stages 10 to 13 in week 4 where organogenisis occurs and major organ such as heart are formed. | |||
From week 3 to week 4 = 7-13 carnegie stages | |||
What is the change in overall embryo size form the beginning of week 3 to the end of week 4? | |||
At week 3 embryo is 0.4 mm in size measure by CRL and by the end of week 4 (carnegie stage 13) the embryo became 3-5 mm and hence the growth is between 2.6-4.6 mm | |||
Approximately when do the cranial (anterior) and caudal (posterior) neuropores close in the human embryo? | |||
The cranial neropore closes at Carnegie stage 11 (about 24 days) within a few hours. | |||
The caudal neropore closes later than cranial neropore since it closes at Carnegie stage 12 (about 26 days) over a day. | |||
The caudal neropore closes in |
Revision as of 11:48, 18 August 2010
--Navneet Ahuja 23:38, 28 July 2010 (UTC)
External link SMH
Picture
--Navneet Ahuja 23:15, 4 August 2010 (UTC)
Lab 2 Questions
What factor do the synctiotrophoblast cells secrete to support the ongoing pregnancy?
a> Synctiotropoblast secrete hormone hCG - Human chorionic gonadotropin that support the pregnancy
What does the corpus luteum secrete to prevent continuation of the menstrual cycle?
b> Corpus luteum produces hormone Estrogen and Progesterone that prevents mentruation
--Navneet Ahuja 23:04, 11 August 2010 (UTC)
Question for lab 3
What Carnegie stages occur during week 3 and week 4?
Stages 7 to 9 in week 3 where 3 major importance was given to gastulation,placentation and notochord formation stages 10 to 13 in week 4 where organogenisis occurs and major organ such as heart are formed. From week 3 to week 4 = 7-13 carnegie stages
What is the change in overall embryo size form the beginning of week 3 to the end of week 4?
At week 3 embryo is 0.4 mm in size measure by CRL and by the end of week 4 (carnegie stage 13) the embryo became 3-5 mm and hence the growth is between 2.6-4.6 mm
Approximately when do the cranial (anterior) and caudal (posterior) neuropores close in the human embryo?
The cranial neropore closes at Carnegie stage 11 (about 24 days) within a few hours. The caudal neropore closes later than cranial neropore since it closes at Carnegie stage 12 (about 26 days) over a day.
The caudal neropore closes in