Obsterics & Gynecology

Correct Answer - A Ans. is None/ a i.e. 3-4 mm "7he Endometrium is in the secretory phase corresponding to 20 - 21 days of cycle" at the time of implantation. "After ovulation, the endometrium now demonstrates a combined reaction to estrogen and progesterone activity. Most impressive is that total endometrial height is fixed at roughly its preovulatory extent (5-6 mm) despite continued availability of estrogen." Reading the above text it is clear that endometrium is - 5 - 6 mm thick at the time of implantation, which is not given in the option. Still if you have to mark one answer option 'a' i.e. 3 - 4 mm being closest could be right. Extra Edge Implantation occurs 7 - 9 days after ovulation. In human, the blastocyst burrows in the uterine cavity till whole of it lies within the thickness of endometrium. This is called as interstitial implantation. After implantation of the embryo the uterine endometrium is called the decidua". Decidua basalis - The part of decidua where the placenta is to be formed. Decidua Capsularis - The part of the decidua that separates the embryo from the uterine lumen.

Correct Answer - C CO2 CO, is the gas used to create pneumoperitoneum during laparoscopy. Other option is - N20: But it is expensive, less soluble in blood and supports combustion. Also know: Instrument used for creating pneumoperitoneum is veress needle. Flow Rate of CO, for creating pneumoperitoneum 200 - 2000 ml/min & pressure between 15 - 25 mm of Hg.

Correct Answer - A Streptococci

Langhans cells are seen in Cytotrophoblast The cells of the blastocyst differentiate into an outer trophectoderm and an inner cell mass. The trophectoderm is further differentiated into an inner mononuclear cellular layer called cytotrophoblast or Langhans layer or Langhans cells and an outer layer of multinucleated syncytium called syncytiotrophoblast.

Submentovertical diameter is the longest diameter of fetal skull. The submentovertical diameter extends from the junction of the floor of the mouth and neck to the highest point on sagittal suture. Shortest diameters of fetal skull: Bimastoid (7.5 cm) > Bitemporal (8 cm) Longest diameter vertical (14 cm) > Supmentovertical

The 1st meiotic division gets arrested in the embryonic life in the Dictyotene stage of prophase. The division is completed only after puberty just prior to ovulation. The resting stage is activated by oocyte maturation inhibitor secreted by follicular cells At puberty, a pool of growing follicles is established and continuously maintained from primordial follicles.

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