The delivery process is described in terms of presentation, as well as fetal station, lie, and attitude. Which of the following presentations is most common at birth?

Question

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Cephalic presentation
In cephalic presentation, the fetus is in a longitudinal lie (and head enters the pelvis first). Vertex presentation is the most common type of cephalic presentation. In contrast, the newborn exits the pelvis with the buttocks or feet first during a breech presentation. Breech presentation occurs in 3 - 4% of all deliveries. In a compound delivery, there is presentation of a fetal extremity alonside a presenting part.

The Delivery Process Is Described in Terms of Presentation, as Well