Premenstrual syndrome (PMS) can include mood swings, fluid retention (edema), anxiety, backache and joint pain, food cravings, and other symptoms. PMS usually develops after ovulation and lasts until just before or just after menstruation begins. Although the precise cause of PMS is unknown, it seems clearly related to the cyclic production of ovarian hormones. After reviewing Figure 16.3, suggest which hormonal changes may trigger PMS.
Figure 16.3 Animated! Hormones govern the menstrual and ovarian cycles. A GnRH from the hypothalamus stimulates the anterior pituitary to secrete FSH and LH. B FSH and LH stimulate a follicle to grow, an oocyte to mature, and the ovaries to secrete progesterone and estrogens that stimulate the endometrium to rebuild. C A midcycle LH surge triggers ovulation and the formation of a corpus luteum. D Progesterone and some estrogens released by the corpus luteum maintain the endometrium, but if no pregnancy occurs, they stop being released and the corpus luteum breaks down. (© Cengage Learning)
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Human Biology (MindTap Course List)
- Progesterone: 1) Is produced in adult testes and is responsible for genital development, beard growth, muscle development, and sexual drive 2) Is produced by the placenta during pregnancy, with highest levels seen at conception and then steadily decreasing to non-detectable levels at term 3) Is lowest is serum during the luteal phase of the menstrual cycle and highest during the follicular phase 4) Parallels activity of the corpus luteum by rapidly increasing following ovulation and then abruptly falling to initial low concentrations prior to the onset of menstruation no references, just homework.arrow_forwardWhich of the following statements accurately describes the pathogenesis of polycystic ovarian syndrome? Question 28 options: a) Excessive androgens that affect follicular decline by suppressing apoptosis, enabling follicles, which normally disintegrate to survive b) A decrease in leptin levels that reduces the hypothalamic pulsatility of GnRH, which reduces the number of follicles that mature c) A disorder of the anterior pituitary that increases the release of FSH, which reduces the release of LH d) Testosterone that stimulates androgen secretion by the ovarian stroma and reduces SHBG indirectlyarrow_forwardChlamydia is caused by the bacteria Chlamydia trachomatis. If not treated, it can cause pelvic inflammatory disease (PID) in women and epididymitis in men. PID can cause scar tissues in the structure responsible for transporting the fertilized egg and in the tissue that is maintained by progesterone during a menstrual cycle, leading to infertility. In the diagram above, the structures associated with PID for the effects described above are numbered Select one: a. 1, which is the Fallopian tube, and 3, which is the endometrium, respectively b. 1, which is the Fallopian tube, and 4, which is the endometrium, respectively c. 4, which is the uterus, and 6, which is the cervix, respectively d. 3, which is the uterus, and 7, which is the cervix, respectivelyarrow_forward
- Polycystic ovarian syndrome (PCOS) is an endocrine disorder. PCOS may result in irregular periods, elevated levels of male hormones, and enlarged ovaries with fluid filled sacs called cysts.Doctors may prescribe birth control pills containing only progesterone to help regulate periods and reduce symptoms.Progesterone plays an important role in the ovarian and uterine cycles. Describe the levels of progesterone during an average 28-day cycle and explain why these levels occur.arrow_forwardListed in the table below are the five major reproductive hormones that support ovulation in female mammals, including the giant panda. Describe the role of each hormone in this process and the approximate time during the ovarian cycle that it reaches peak levels. Hormone Gonadotropin-releasing hormone (GnRH) Estrogen Luteinizing hormone (LH) Follicle stimulating hormone (FSH) Progesterone Role in Regulation of the Menstrual Cycle Timing of Peak Levelarrow_forwardIdentify three major factors opposing the calming action of progesterone on the uterus.arrow_forward
- Use the following information to answer the following question.The onset of labour both at term and preterm is associated with a functional withdrawl of progesterone activity at the level of the uterus. One method that can be used to reduce preterm labour is to supplement with synthetic progesterone.(https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3218546/)Progesterone supplementation may help to prevent preterm delivery by Select one: a. increasing levels of FSH b. decreasing the endometrium c. calming uterine contractions d. decreasing levels of estrogenarrow_forwardDescribe the function of each of the following hormones in the uterine and ovarian cycles: GnRH, FSH, LH, estrogens, progesterone, and inhibin.arrow_forwardWhich of the following is true regarding LH signaling in men? O Stimulates leydig cells to produce testosterone O Stimulates the sertoli cells to increase spermatogenesis O Stimulates the leydig cells to produce inhibin OStimulates the granulosa cells to increase spermatogenesis Stimulates the theca cells to produce testosteronearrow_forward
- Clomiphene Citrate is a fertility drug that stimulates hypothalamic secretion of Gonadotropin releasing Hormone (GnRH) in females and induces ovulation. Explain how increased GnRH with Clomiphene Citrate treatment would affect follicle maturation and ovulation in women (explain how increased GnRH would affect FSH, LH, Estrogen, and ovulation).arrow_forwardUsing the following hormone choices, which of the following puts the hormones of the female menstrual cycle in the correct order starting from day 1 and assuming a pregnancy has happend. A. estrogen B. follicle stimulating hormone (FSH) C. human chorionic gonadotropin (HCG) D. luteinizing hormone (LH). E. progesterone F. testosterone ОА. В, Е, С, А, D ОВ.А, D, B, С, Е ОСВ, А, D, E, С O D. D, B, A, E, Carrow_forwardDescribe the process of oogenesis Describe the hormonal control of oogenesis including the hypothalamic-pituitary-gonadal axis (which in this case is the hypothalamic-pituitary-ovarian axis). Describe the components of the ovarian and menstrual cycles. Describe methods of contraception and how they work.arrow_forward
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