Fetus Anatomy

As the embryo develops into a fetus the tube shaped heart folds and further differentiates into the four chambers present in a mature heart. Neck nuchal fold thickness.

Fetus Model 3 Month

Those who want to can find out the sex of the baby if desired.

Fetus anatomy. The second trimester extends from 13 weeks and 0 days to 27 weeks and 6 days of gestation although the majority of these studies are performed between 18 and 23 weeks. The following fetal parts are checked during the anatomy ultrasound. Fetal ultrasound images can help your health care provider evaluate your babys growth and development and monitor your pregnancy.

When a longitudinal plane of section demonstrates the fetal body to be transected transversely and the fetal spine is nearest the uterine fundus with the fetal right side down the fetus is in a transverse lie with the fetal head on the maternal right. About half of this enters the fetal ductus venosus and is carried to the inferior vena cava while the other half enters the liver proper from the inferior border of the liver. When the heart first forms in the embryo it exists as two parallel tubes derived from mesoderm and lined with endothelium which then fuse together.

The second trimester scan is a routine ultrasound examination in many countries that is primarily used to assess fetal anatomy and detect the presence of any fetal anomalies. An unborn baby from the 8th week after fertilization until birth. Your baby will be measured from crown to rump around the middle and around the head and his or her weight will be estimated.

The fetal circulatory system becomes much more specialized and efficient than its embryonic counterpart. Brain ventricles choroid plexus mid brain posterior fossa cerebellum cisterna magna. Heart rate rhythm 4 chamber views.

Skull shape integrity bpd and hc measurements. The fetal period lasts from the ninth week of development until birth. The anatomy scan is a level 2 ultrasound which is typically performed on pregnant women between 18 and 22 weeks.

A thin walled sac that surrounds the fetus during pregnancy. The fetal circulatory system. A fetal ultrasound sonogram is an imaging technique that uses sound waves to produce images of a fetus in the uterus.

It only grows. The fetus obtains oxygen and nutrients from the mother through the placenta and the umbilical cord. Fetus in utero amniotic sac.

Images are much clearer and more detailed than the fuzzy ultrasound you got in your first trimester. An organ shaped like a flat cake. Blood from the placenta is carried to the fetus by the umbilical vein.

A level 2 ultrasound focuses closely on fetal anatomy to be sure everything is growing and developing as it should. The lower part of the uterus that extends into the vagina. In some cases fetal ultrasound is used to evaluate possible problems or help confirm a diagnosis.

During this period male and female gonads differentiate.

The Beautiful And Efficient Anatomy Of Pregnancy Huffpost