Physiology of Conception and Fertilisation

• Q1.Upon contact between the sperm head and the zona pellucida, penetration of the sperm into the egg is allowed because of:

  • AThe acrosome reaction
  • BThe zona reaction
  • CThe perivitelline space
  • DPro nuclei formation
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• Q2.Fertilization most commonly takes place at

  • AInfundibulum
  • BAmpulla
  • CIsthmus
  • DInterstitium
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• Q3.Fertilization occurs in which pa of the fallopian tube

  • AAmpulla
  • BIsthmus
  • CInterstitial
  • DInfundibular
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• Q4.Uterus is receptive for implantation for how many days after fertilization -

  • A6 days
  • B12 days
  • C6 weeks
  • D12 weeks
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• Q5.Successful fertilization is most likely to occur when the oocyte is in

  • AThe oviduct and has entered the second meiotic division
  • BThe uterus and has completed the first meiotic division
  • CMetaphase of mitosis
  • DThe graafian follicle, which then enters the oviduct
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• Q6.Time taken for capacitation is:

  • A2 hrs
  • B3 hrs
  • C5 hrs
  • D7 hrs
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• Q7.Sperm capacitation occurs in -

  • ACervix
  • BFallopian tubes
  • CUterus
  • DVagina
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• Q8.In a young female ot reproductive age with regular menstrual cycles of 28 days, ovulation occurs around 14th day of periods. When is first polar body extruded ?

  • A24 hours prior to ovulation
  • BAccompanied by ovulation
  • C48 hours atter the ovulation
  • DAt ths time of feilization
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• Q9.Ovulation occurs after the extrusion of:

  • APrimary oocyte
  • BFemale pronucleus
  • Clstpolar body
  • D2nd polar body
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• Q10.Mucosal lining of fallopian tube secretion for ovum nutrition controlled by -

  • ALH
  • BFSH
  • CEstrogen
  • DProgesterone
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Answer key

Q1: A. The acrosome reaction; Q2: B. Ampulla; Q3: A. Ampulla; Q4: A. 6 days; Q5: A. The oviduct and has entered the second meiotic division; Q6: D. 7 hrs; Q7: B. Fallopian tubes; Q8: B. Accompanied by ovulation; Q9: C. lstpolar body; Q10: D. Progesterone.

Other topics in Obstetrics & Gynaecology

• Anatomy of the Female Pelvic Organs
• The Maternal Pelvis and Fetal Skull
• The Placenta and Fetal Membranes
• Sexual Development, Puberty and Adolescent Gynaecology
• Maternal Physiological Changes in Pregnancy
• Pregnancy Diagnosis and Antenatal Assessment
• Antenatal Screening and Investigations
• Imaging in Obstetrics
• Normal Labour: Stages and Mechanism
• Abnormal Labour and Dystocia
• Labour Induction and Augmentation
• Malpresentations and Malpositions
• Assisted Vaginal Delivery: Forceps and Vacuum
• Caesarean Delivery and Vaginal Birth After Caesarean (VBAC)
• Puerperium
• Multiple Pregnancy
• Ectopic Pregnancy
• Abortion and Medical Termination of Pregnancy (MTP)
• Antepartum Haemorrhage
• Postpartum Haemorrhage and Its Management
• Preterm Labour and Post-term Pregnancy
• Gestational Trophoblastic Disease
• Fetal Growth Restriction and Fetal Surveillance
• Anaemia in Pregnancy
• Hypertensive Disorders of Pregnancy
• Diabetes Mellitus in Pregnancy
• Thyroid Disorders in Pregnancy
• Cardiac Disease in Pregnancy
• Rhesus Isoimmunisation and Haemolytic Disease
• Liver Disease and Infections in Pregnancy
• Menstrual Disorders and Abnormal Uterine Bleeding
• Urogynaecology and Urinary Incontinence
• Prolapse
• Uterine Fibroids
• Adenomyosis and Endometriosis
• Ovarian Disorders
• Contraception and Sterilisation
• Vaginitis and Vaginal Infections
• Infections of the Vulva
• Pelvic Inflammatory Disease (PID)
• Genital Tuberculosis
• Infertility
• Perimenopause, Menopause and Postmenopausal Bleeding
• Ovarian Tumours
• Vulval and Vaginal Malignancies
• Carcinoma of the Cervix
• Carcinoma of the Endometrium
• Obstetric and Gynaecological Instruments