The interstitial cells Severing the vas deferens Implantation The myometrium Estrogen and progesterone are In the non-pregnant state, The proliferative phase of the uterine cycle The corpus luteum If implantation occurs within the fallopian tube, the Human chorionic gonadotropin (hCG)

1. The interstitial cells

secrete testosterone

2. Severing the vas deferens

induces sterility

3. Implantation

is a uterine event achieved by the blastocyst

4. The myometrium

is responsive to oxytocin

5. Estrogen and progesterone are

secreted by the ovaries

6. In the non-pregnant state,

hormonal secretion of the corpus luteum gradually declines

7. The proliferative phase of the uterine cycle

immediately precedes the uterine secretory phase

8. The corpus luteum

secretes large amounts of progesterone

9. If implantation occurs within the fallopian tube, the

pregnancy is described as ectopic

10. Human chorionic gonadotropin (hCG)

maintains the corpus luteum