In a vertex presentation the diameter of engagement is:
Ans. A. SuboccipitobregmaticFetal skulla. Mento vertical diameter =14.5cm,b. Submentovertical =11.5cm,c. Sub occipitofrontal =10cm,d. Suboccipitobregmatic =9.5cm (diameter of engagement in vertex presentation),e. Biparietal =9.5cm.
Suboccipitobregmatic
Suboccipito-frontal
Occipitofrontal
Bitemporal
Fetal Skull and Maternal Pelvis