Change: There were only format changes (bold, italics, etc.) in this version. See this version for details. (Word count: 372)

Change: bone, using only an abdominal hand.symphisis At 16 weeks, the top of the uterus is 1/2 way between the pubic bonesymphisis and the umbilicus. At 20-22 weeks, the top of the uterus is right at the umbilicus. At full term, the top   View changes from previous version. (Word count: 372)

Change: There were only format changes (bold, italics, etc.) in this version. See this version for details. (Word count: 371)

Change:  Ultrasound can be used to determine gestational age. Measurement of a crown-rump length during the first trimester (1-13 weeks) will give a gestational age that   View changes from previous version. (Word count: 371)