Human Reproduction and Development

1. Which reproductive structures are least similar in function
a) testes and ovaries
b) ductus deferens and fallopian tube
c) interstitial cells of testes and follicles of ovaries
d) ductus deferens and uterus

2. Some events in Labor

1. Uterine contractions increase in force.
2. Oxytocin travels through the bloodstream
3. nervous impulses are sent to the hypothalamus.
4. Oxytocin is released from the posterior pituitary

At the onset of labor, a baby's head pushes on the cervix. Following this, the events given above, listed in the order in which they occur, are

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