Fertilisation of the human ovum normally occurs in the
Correct answer: C. ampulla of the fallopian tube
- A. uterus
- B. cervix
- C. ampulla of the fallopian tube
- D. ovary
Explanation
The secondary oocyte is swept into the oviduct at ovulation and meets sperm in the wide upper third, the ampulla, within about a day. The zygote then divides as it travels down and reaches the uterus as a blastocyst several days later, so the uterus is the site of implantation rather than of fertilisation. Fertilisation in the ovary or in the abdominal cavity is possible but is an abnormal ectopic pregnancy.
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About Human Reproductive System
The human reproductive system includes the male and female organs that produce gametes, secrete sex hormones and support fertilization and development. Questions cover the testes, ovaries, reproductive ducts, menstrual and ovarian cycles, ovulation, fertilization, implantation, placenta formation and the roles of FSH, LH, oestrogen, progesterone and testosterone.
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