You expect interstitial endocrinocytes (interstitial cells of Leydig) to be rich in which of the following? Interstitial endocrinocytes are specialized cells in the testes that are responsible for the synthesis of testosterone, which is a steroid hormone. A) RibosomesB) Rough endoplasmic reticulum C) Smooth endoplasmic reticulum D) Golgi apparatus

Many birth-control pills release a constant amount of synthetic estradiols and progesterone for 21 days, followed by 7 days when no hormones are ingested. which of the following statements most accurately describes the effects of birth-control pills? -birth-control pills maintain constant levels of estrogens and/or progesterone so there is no surge in lh and ovulation does not occur.-birth-control pills inhibit the development of the uterine lining so implantation of a fertilized oocyte cannot occur.-birth-control pills maintain constant levels of estrogens and/or progesterones and mask the release of the oocyte from the follicle.-the 7 days with no hormones does not allow a thick enough uterine lining to form so a fertilized oocyte cannot implant.