increases to coulevels8. Which hormone works with estrogen to prepare theendometrium for implantation of a fertilized egg ?.A. LHB. FSHC. ADHD. progesterone9.What stimulates the production of testosterone in the interstcells?A. inhibinC. follicle-stimulating hormoneD. progesteroneB. luteinizing hormone10. Which hormone causes release of progesterone?A. estrogen B. prolactin C. prostaglandin D. LH11. What hormone do the ovaries secrete?A. LH and estrogen C. inhibin and testosteroneB. progesterone and FSH D. Progesterone andestrogen12. Which pair of reproductive hormones aresecreted by the testes?A. FSH and progesterone C. Relaxin and estrogenB. progesterone and LHD. testosterone and estrogen13. Which hormone is responsible for sustaining thepregnancy by thickening the uterine lining?A. estrogenC. progesteroneB. follicle stimulating hormone D. luteinizing hormone14. What female sex hormone maintains female secondarysex characteristics? 1. Which of the following statements about hormoneregulation of the female reproductive cycle is FALSE?A. LH and FSH are produced in the pituitary, and estradioland progesterone are produced in the ovaries.B. Estradiol and progesterone secreted from the corpusluteum cause the endometrium to thicken.C. Both progesterone and estradiol are produced by thefolliclesD. Secretion of GnRH by the hypothalamus is inhibited bylow levels of estradiol but stimulated by high levels ofestradiol.2. What hormone causes Leydig cells to make testosterone?A. Follicle Stimulating HormoneC. InhibinB. Luteinizing HormoneD. Estrogen3. Which hormone causes FSH and LH to be released?A. Testosterone C. Gonadotrophin-releasing hormoneD. ProgesteroneB. Estrogen4. Which reproductive hormone that helps in endometrialgrowth, ovulation and calcium absorption?A. Follicle Stimulating Hormone C. InhibinB. Luteinizing HormoneD. Estrogen5. Which hormone stimulates the ovaries to release estrogen?A. luteinizing hormoneB. progesteroneC. follicle stimulatingD. vasopressin hormone6. If GnRH production were blocked, then which of thefollowing would not occur.A. FHS levels would increase.B. LH levels would be decreaseC. Testosterone production would decreaseD. Sperm production would decrease

The biochemical substances synthesized and secreted by endocrine glands or specialised cells, are…

8. Which hormone works with estrogen to prepare the endometrium for implantation of a fertilized egg ?. A. LH B. FSH C. ADH D. progesterone 9.What stimulates the production of testosterone in the interst cells? C. follicle-stimulating hormone D. progesterone A. inhibin B. luteinizing hormone 10. Which hormone causes release of progesterone? A. estrogen B. prolactin C. prostaglandin D. LH 11. What hormone do the ovaries secrete? A. LH and estrogen C. inhibin and testosterone B. progesterone and FSH D. Progesterone and estrogen 12. Which pair of reproductive hormones are secreted by the testes? A. FSH and progesterone C. Relaxin and estrogen B. progesterone and LH D. testosterone and estrogen 13. Which hormone is responsible for sustaining the pregnancy by thickening the uterine lining? A. estrogen C. progesterone B. follicle stimulating hormone D. luteinizing hormone 14. What female sex hormone maintains female secondary sex characteristics?

8. Which hormone works with estrogen to prepare the endometrium for implantation of a fertilized egg ?. A. LH B. FSH C. ADH D. progesterone 9.What stimulates the production of testosterone in the interst cells? C. follicle-stimulating hormone D. progesterone A. inhibin B. luteinizing hormone 10. Which hormone causes release of progesterone? A. estrogen B. prolactin C. prostaglandin D. LH 11. What hormone do the ovaries secrete? A. LH and estrogen C. inhibin and testosterone B. progesterone and FSH D. Progesterone and estrogen 12. Which pair of reproductive hormones are secreted by the testes? A. FSH and progesterone C. Relaxin and estrogen B. progesterone and LH D. testosterone and estrogen 13. Which hormone is responsible for sustaining the pregnancy by thickening the uterine lining? A. estrogen C. progesterone B. follicle stimulating hormone D. luteinizing hormone 14. What female sex hormone maintains female secondary sex characteristics?

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter43: Animal Reproduction And Development

Section: Chapter Questions

Problem 2VCQ: Figure 43.15 Which of the following statements about hormone regulation of the female reproductive...

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Figure 43.15 Which of the following statements about hormone regulation of the female reproductive cycle is false? LH and FSH are produced in the pituitary, and estradiol and progesterone are produced in the ovaries. Estradiol and progesterone secreted from the corpus luteum cause the endometrium to thicken. Both progesterone and estradiol are produced by the follicles. Secretion of GnRH by the hypothalamus is inhibited by low levels of estradiol but stimulated by high levels of estradiol.
Figure 18.17 Which of the following statements about hormone regulation of the female reproductive cycle is false? a. LH and FSH are produced in the pituitary, and estrogen and progesterone are produced in the ovaries. b. Estradiol and progesterone secreted from the corpus luteum cause the endometrium to thicken. c. Both progesterone and estrogen are produced by the follicles. d. Secretion of GnRH by the hypothalamus is inhibited by low levels of estrogen but stimulated by high levels of estrogen.
1.This will stimulate the ovary to start the development of an egg cell and the secretion of estrogen. A. Follicle-stimulating hormone (FSH) B. Gonadotropin-releasing hormone (GnRH) C. Luteinizing hormone (LH) D. Prolactin 2. Which of the following is the negative feedback effect of ovaries losing sensitivity to FSH and LH? A. higher fertility rate B. an increase in production of estrogen. C. irregular cycle of ovulation and menstruation D. increase follicular development and ovulation.
1. This hormone stimulates the thickening of the endometrium and can inhibit FSH and LH release A. Progesterone B. Estrogen C. Estradiol 2. The hormone is secreted and initiate the appearance of the secondary sex characteristics in females. A. Progesterone B. Estrogen C. Estradiol 3. The reproductive hormone in females that stimulate the thickening of the endometrium, ovulation and calcium absorption. A. Progesterone B. Estrogen C. Estradiol
Which of the following statements about hormone regulation of the female reproductive cycle is false? a. LH and FSH are produced in the pituitary, and estradiol and progesterone are produced in the ovaries. b. Estradiol and progesterone secreted from the corpus luteum cause the endometrium to thicken. c. Both progesterone and estradiol are produced by the follicles. d. Secretion of GnRH by the hypothalamus is inhibited by low levels of estradiol but stimulated by high levels of estradiol.
1.) A.) Contrast the action of FSH in males and females. In your answer, consider how FSH regulates the production of estrogen and testosterone B.) Efforts to develop a male oral contraceptive have focused on drugs that block the effects of FSH. Justify why it would be undesirable to block the effects of LH.
1. it controls the processes in the reproductive system a. ovary b. pituitary c. corpus luteum d. follicle
15.The zone of the testicular follicle where the primary spermatocytes become secondary spermatocytes and spermatids during the first and second meiosis respectively is the zone ofA. transformation.B. maturation and reduction.C. growth.D. germarium. 16.A hormone which has been shown in some species to have an inhibitory effect on spermatogenesis isA. ecdysone.B. peptide hormone.C. juvenile hormone.D. inhibin.
During the menstrual cycle, the degradation of the corpus luteum causes what? A) The decrease of progesterone levels and the thickening of the endometrium. B) The decrease of estrogen levels and increase of progesterone levels. C) The decrease of estrogen levels and the thickening of the endometrium. D) the decrease of progesterone levels and menses(period)
2. a person is xy, has sry gene, is androgen insensitive, has male internal anatomy but female external anatomy. which of the following is caused by a lack of androgen receptors? a. xy chromosomes b. elevated plasma androgens c. lack of uterus d. presence of testes
What important change happens to sperm in the female reproductive tract? a) The activation of the microtubule motors in the sperm tail b) The sperm head decondenses releasing the DNA c) Capacitation which increases sperm motility d) Loss of the fibrous sheath e) The outer dense fibres become less rigid
Which of the following does not describe the accessory glands of the female reproductive system? TheyA. are saclike expansions of the vaginal region. B. Are muscular and ectodermal in origin.C. usually open at the apical portion of the bursa copulatrix.D. creamy white in color and opens into the genital chamber. Spermatophores are specialized packets held together by glands thatA. play a role in influencing the permeability of the testicular wall.B. are used to transport sperms into the female reproductive tract.C. regulate the release of sperm cells.D. stimulate contraction of the genital ducts. The zone of the testicular follicle where the primary spermatocytes become secondary spermatocytes and spermatids during the first and second meiosisrespectively is the zone ofA. transformation.B. maturation and reduction.C. growth.D. germarium. A hormone which has been shown in some species to have an inhibitory effect on spermatogenesis isA. ecdysone.B. peptide hormone.C. juvenile hormone.D.…