What is a vaginal plug?

What is a vaginal plug?

• A. It blocks copulation when a rodent is not in estrus.
• B. It is the membrane covering the vaginal orifice.
• C. It is a waxy plug formed from copulation fluids in female mice and rats.
• D. It is a method of contraception.

Answer: (C)

A vaginal plug is a waxy mass that forms in the vagina after mating in female mice and rats. It develops from copulatory fluids and secretions in the reproductive tract and remains inside, signaling that copulation has occurred. This plug helps researchers confirm that mating took place and can aid in timing conception and gestation checks. It is not a membrane covering the vaginal opening, not a method of contraception, and it does not function to block mating when the female is not in estrus.

A vaginal plug is a waxy mass that forms in the vagina after mating in female mice and rats. It develops from copulatory fluids and secretions in the reproductive tract and remains inside, signaling that copulation has occurred. This plug helps researchers confirm that mating took place and can aid in timing conception and gestation checks. It is not a membrane covering the vaginal opening, not a method of contraception, and it does not function to block mating when the female is not in estrus.