User:Z3290040

Week 1

--Nathan Weller 23:38, 28 July 2010 (UTC)

cell division

google

Science web-page

New editing subheading

now i can

Picture

Week 2

--Nathan Weller 10:33, 5 August 2010 (UTC)

1) Human Chorionic Gonadotropin

2) Progesterone

Week 3

--Nathan Weller 10:59, 12 August 2010 (UTC)

1) Week 3 = Carnegie stages 7 - 9

    Week 4 = Carnegie stages 10 - 13

2) Approx 2.6-4.6 mm (CRL) 3) Cranial (anterior) neuropore closes at caregie stage 11, day 24, within a few hours and caudal (posterior) neuropore closes at carnegie stage 12, 26 days, within a day.

Week 4

--Nathan Weller 9:32, 19 August 2010 (UTC)

1) Cardinal, vitelline, umbillical 2) Both play a role in vitelline circulation to and from the yolk sack. The artery rises froms the dordal aorta and form the Celiac, superior and inferior mesenteric artery. The vien eventually forms branches and trunk of the portal vein. 3) Synctiotrophoblast, cytotrophoblast, vili connective tissue and fetal capillary endothelium. 4) Hematopoietic stem cells (HSC's)

Week 5

--Nathan Weller 9:16, 26 August 2010 (UTC)

1) Splanchnic mesoderm 2) Carnegie stage 11 3) Lungs formation development at Carnegie stage 22 4) Alveolar cells, type 2. These may not fully develop causing surfactant to be secreted.

Week 7

--Nathan Weller 9:17, 16 September 2010 (UTC)

1) The Myotube is multinucleated and is an organization of different zones and myoblasts that contract muscles, also known as a sarcomere. Its formation is carried out by the fusion of myoblasts. 2) a) Atrophy causing loss of slow twitch and mostly fast twitch fibers.

    b) Will see a shift in ratio to more slow twitch fibers and less fast twitch.

Week 8

--Nathan Weller 9:37, 23 September 2010 (UTC)