<prompt> Shortest diameter of fetal skull isMentoverticalSubmentobregmaticMentobregmaticOccipitofrontal  <response>: B Submentobregmatic 85-Dutta 7thFETAL SKULL AND MATERNAL PELVISDimetersMeasurement in cm inchesAttitude of the headPresentation1. Suboccipito- bregmatic- extends from the nape of the neck to the center of the bregma9.5 cm 3 34 Complete flexionVertex2. Suboccipito-frontal- extends from the nape of the neck to the anterior of the anterior fontancll or center of the sinciput10 cm 4Incomplete flexionVertex3. Occipito-frontal- extends from the occipital eminence to the root of the nose Glabella.11.5 cm 4 12 Marked deflexionVertex4. Mento-vertical- extends from the mid point of the chin to the highest point on the sagittal suture.14 cm 5 12 Partial extensionBrow5. Submcnto-vcrtical-extends from junction of floor of the mouth and neck to the highest point on the sagittal suture11.5 cm 4 12 IncompleteextensionFace6. Submento- bregmatic- extends from junction of floor of the mouth and neck to the centre of the bregma9.5 cm 3 34 Complete extensionFace Transverse diameters- Biparietal diameter - 9.5 cm 3 34 - Super- subparietal - 8.5 cm 3 12 - Bitemporal dimeter - 8.cm 3 114- Bimastoid diameter - 7.5 cm 3A. Diameters of pelvic inlet1. Antero-posterior True conjugateAnatomical conjugate 11cm2. Obstetric conjugate 10 cm3. Diagonal conjugate 12 cm4. Transverse diameter 13 cm5. Oblique diameter 12 cm6. Sacroclyloid smallest 9.5 cmB. Diameter of pelvic outlet1. Obstetrical Anteroposterior; from inferior border of symphysis pubis to tip of sacram 11 cm Transverse bispinous interspinous distance between two ischial spines 10.5 cm2. Anatomical outlet From lower borders of symphysis pubic to tip of coccyx 13 cm Transverse diameter inter tuberous diamcterdistance between inner borders of ischial tuberosities 11cm Diagnal conjugate measured clinically 