During the first period, which lasts until the 24th gestational week, the incidence of a longitudinal lie increases, with equal proportions of breech or cephalic presentations from this lie.
2.
A "'cephalic presentation "'or "'head presentation "'or "'head-first presentation "'is a situation at childbirth where the fetus is in a longitudinal lie and the head enters the pelvis first; the most common form of cephalic presentation is the vertex presentation where the occiput is the leading part ( the part that first enters the birth canal ).
मोबाइल