In human adult females oxytocin:
Correct answer: B. causes strong uterine contractions during parturition
- A. stimulates pituitary to secrete vasopressin
- B. causes strong uterine contractions during parturition
- C. is secreted by anterior pituitary
- D. stimulates growth of mammary glands
Explanation
In human adult female oxytocin is a hormone released by the pituitary gland (neurohypophysis), that causes contraction of the uterus during labour and stimulates milk flow from the breasts by causing contraction of muscle fibres in the milk ducts.
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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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