All Free Midwifery and Obstetric Nursing MCQs with Answers
Every Midwifery and Obstetric Nursing question in the bank, across all chapters, each with the correct answer and a written explanation. Free and unlimited, with no account needed.
450 questions · page 23 of 23
441. Which structure divides the bony pelvis into the greater pelvis above and the lesser pelvis below?
- A. Pelvic brim
- B. Obturator foramen
- C. Ischial spine
- D. Sacral promontory
Explanation: The pelvic brim, also called the pelvic inlet, separates the greater pelvis from the lesser pelvis.
Correct answer: Pelvic brim442. Which male reproductive gland releases a clear mucus before ejaculation that lubricates the urethra?
- A. Prostate gland
- B. Seminal vesicle
- C. Bulbourethral gland
- D. Epididymal gland
Explanation: The bulbourethral glands produce a mucus-like secretion that lubricates the urethra and helps neutralise residual acidity.
Correct answer: Bulbourethral gland- A. Progesterone
- B. Oestrogen
- C. Human chorionic gonadotropin
- D. Oxytocin
Explanation: Oestrogen from developing ovarian follicles promotes the proliferative growth of the endometrium during the pre-ovulatory phase.
Correct answer: Oestrogen- A. Acrosome reaction
- B. Cortical reaction
- C. Capacitation reaction
- D. Decidual reaction
Explanation: The cortical reaction changes the zona pellucida after sperm-oocyte fusion and blocks polyspermy.
Correct answer: Cortical reaction- A. Two secondary spermatocytes
- B. Four spermatids
- C. One primary spermatocyte
- D. Two mature spermatozoa
Explanation: Meiosis I divides one primary spermatocyte into two haploid secondary spermatocytes.
Correct answer: Two secondary spermatocytes446. A woman asks why the fertilised ovum has a diploid chromosome number. Which explanation is correct?
- A. The ovum duplicates its chromosomes before ovulation
- B. The sperm and oocyte nuclei fuse during fertilisation
- C. The uterus adds chromosomes during implantation
- D. The corpus luteum supplies chromosomes to the zygote
Explanation: Fertilisation combines the haploid chromosomes of the sperm and secondary oocyte, restoring the diploid chromosome number in the zygote.
Correct answer: The sperm and oocyte nuclei fuse during fertilisation- A. Corpus luteum
- B. Primary follicle
- C. Ovarian medulla
- D. Germinal epithelium
Explanation: The ruptured mature follicle becomes the corpus luteum, which secretes mainly progesterone after ovulation.
Correct answer: Corpus luteum- A. The functional layer is shed
- B. The basal layer is completely destroyed
- C. The myometrium changes into decidua
- D. The cervix becomes the placenta
Explanation: Menstrual bleeding results from shedding of the functional layer of the endometrium when ovarian hormone levels fall.
Correct answer: The functional layer is shed- A. Cleavage
- B. Gastrulation
- C. Ovulation
- D. Implantation
Explanation: Gastrulation reorganises the early embryo to form ectoderm, mesoderm and endoderm.
Correct answer: Gastrulation- A. Granulosa cell
- B. Leydig cell
- C. Sertoli cell
- D. Trophoblast cell
Explanation: Granulosa cells surround the oocyte within the ovarian follicle and provide support while responding to follicle-stimulating hormone.
Correct answer: Granulosa cell