Fimbriae (common pili) and flagella on the surface of bacterial cells. Left: dividing Shigella enclosed in fimbriae. The structures are probably involved in the bacterium's ability to adhere to the intestinal surface. Right: dividing pair of Salmonella displaying both its peritrichous flagella and its fimbriae.
Relaxin's peak is reached during the 14 weeks of the first trimester and at delivery. It is known to mediate the hemodynamic changes that occur during pregnancy, such as increased cardiac output, increased renal blood flow, and increased arterial compliance.
If you are in true labor, contractions will begin somewhere between the 38th - 42nd week of pregnancy, but usually somewhere around the 40th. Some women lose their mucus plugs and then their labor begins. - Easy to use Contractions Timer with contractions log print out.