The JAWSII Full Wrap Fence Brackets attach wood fence rails to metal fence posts, eliminating rotted and failed wood posts. These brackets are designed to use with standard 2-3/8 outer diameter steel tubing.
Synonym(s): head presentation. (in obstetrics) a fetal presentation in which the vertex of the fetus is the part nearest to the cervical os and can be expected to be born first. Compare breech presentation. vertex presentation.
12-12-2007, 03:03 PM. The fetal pole is a thickening on the margin of the yolk sac of a fetus during pregnancy. It is usually identified at 6.5 weeks with abdominal ultrasound imaging, and 6 weeks with vaginal ultrasound imaging.However it is quite normal for the fetal pole to not be visible until about 8 weeks.The fetal pole may be seen at 2-4 mm crown-rump length (CRL), and heart motion is often detected when it is seen.In the embryo, the heartbeat is seen as a regular flutter, which should be first evident at 5 mm CRL.he fetal pole may be seen at 2-4 mm crown-rump length (CRL), and heart motion is often detected when it is seen. In the embryo, the heartbeat is seen as a regular flutter, which should be first evident at 5 mm CRL.