How big is the fetus at 17 weeks?

At 17 weeks of pregnancy, the net weight of the fetus is approximately between 150 grams and 200 grams, the length from head to middle of buttocks is about 18 centimeters, the biparietal diameter of the fetus is between 3.5 centimeters and 4.4 centimeters, and the length of the femoral head is between 2.2 centimeters and 2.9 centimeters. At this stage, the baby's eyelashes and eyebrows have already grown out. Although the eyes are closed, they have become bigger, the body fat is gradually increasing, and the hearing system has appeared. The strong heartbeat of the fetus can be heard by auscultation.

At 17 weeks of gestation, the fetal biparietal diameter is about 3.8 cm, the fetal femur length is about 2.5 cm, and the fetal growth rate begins to slow down. Vernix caseosa appears on the skin surface, which is a mixture of sebaceous gland secretions and dead epidermal cells. Vernix caseosa protects the fetus's delicate skin to prevent abrasions, cracking or hardening of the skin due to being immersed in the amniotic fluid of pregnant women. During this stage, the activity of the fetus's limbs increases, and the mother can feel the fetal movement. The fetal heartbeat is very obvious, and in clinical medicine it can be heard through the pregnant woman's abdominal cavity.

At 17 weeks, the fetus is already 4 and a half months pregnant, with a body length of about 13 to 17 centimeters and a weight of about 125 grams. The skeletal system continues to grow and develop, the embryo has been fully formed, and the reproductive organs have also been formed. The motility of the fetus's limbs increases, and some people may begin to notice fetal movement. At 17 weeks, the biparietal diameter of the fetus is about 4 cm, the femoral length is about 3 cm, and the abdominal circumference is about 11 cm. The skin of the 17-week fetus is thin, fat has not yet been formed, the skin is dark red, and hair has grown on the top of the head.

At 17 weeks of pregnancy, the fetus is about 16 cm long, 12.8 cm long from top to bottom, and weighs about 110 g. Each fetus has certain individual differences. At this time, the fetus begins to breathe, and the gender of the fetus can be determined from the reproductive organs. The skin is thin, dark red, and has no fat. Hair has grown and sweat has appeared. Some pregnant women will actively feel fetal movement, but some pregnant women may not feel the fetal movement at all, because the fetal movement at this time is relatively small, relatively weak, and not very obvious. If you don't observe carefully, you may not be able to see it.