Question

Which of the following is not a hormone secreted by the ovaries?

• A. Estrogen
• B. Progesterone
• C. Oxytocin
• D. None of the above

Answer 1

The correct option is C Oxytocin

Oxytocin is produced in the hypothalamus and is secreted into the bloodstream by the posterior pituitary gland. Secretion depends on electrical activity of neurons in the hypothalamus – it is released into the blood when these cells are excited. The two main actions of oxytocin in the body are contraction of the womb (uterus) during childbirth and lactation. Oxytocin stimulates the uterine muscles to contract and also increases production of prostaglandins, which increase the contractions further.

So, the correct answer is 'Óxytocin'.