Human Reproduction and Development

1. The thickening of the uterine wall is caused mainly by
a) LH
b) oxytocin
c) estrogen
d) FSH

2. What is the immediate effect of a high level of leutenizing hormone (LH) on the ovary?
a) delays menstruation
b) prevents ovulation
c) stimulates menstruation
d) stimulates ovulation

3. 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

4.If fertilization of the ovum fails to occur, the corpus luteum will
a) degenerate, accompanied by a drop in progesterone levels
b) form from the follicle and begin to secrete follicle stimulating hormone (FSH)
c) degenerate, accompanied by an increase in estrogen levels
d) form from the follicle and begin to secrete luteinizing hormone (LH)

5. 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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