• The cephalic presentation is classified according to the relationship between the head and body of the fetus.

- Vertex or Occiput Presentation – Head is flexed sharply so that the chin is in contact with the thorax.

Key points regarding fetal positions are as follows:

1. At the onset of labor, it's critical to determine the position of the fetus relative to the birth canal since this affects both the route of delivery and potential complications during childbirth.

2. There are three possible presentations:

- Longitudinal lie: This is seen in approximately 99% of pregnancies where either the head or feet are first presenting towards the pelvis. It's generally considered an uncomplicated position for labor and delivery.

3. Transverse lie refers to a situation when the baby’s shoulders, buttocks, or back face toward mom’s abdomen rather than their backs facing her spine at any point during pregnancy after 28 weeks gestationIDL

4.Oblique lies are those where either side of fetal head comes first instead as opposed above mentioned positions because its axis doesn't align perfectly perpendicularly across mother's midline but still not transverse since they don’t cross each other completely like in case number three!

Cardinal movements of labor video