During birth which of the following act as a birth canal?
Correct answer: D. Vagina
- A. Oviduct
- B. Ovary
- C. Uterus
- D. Vagina
Explanation
The vagina acts as the birth canal during childbirth. It is a muscular tube that connects the uterus to the outside of the body. The vagina is a very elastic organ, and it can expand to accommodate the baby during childbirth. The walls of the vagina are lined with mucous membranes, which help to keep the vagina moist and protected.
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Human reproduction covers the male and female reproductive organs, gamete formation, fertilization, implantation and hormonal regulation. The menstrual cycle includes ovarian and uterine changes controlled by pituitary and ovarian hormones, while sexually transmitted diseases are studied through their causes, transmission, symptoms, prevention and effects on fertility.
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