whats the inhibitory effect on the following for males: the The Follicle Stimulating Hormone, (FSH) The Luteinising Hormone (LH) and Testosterone (for males) For females, what is the inhibitory effect during the menstrual cycle for each of the following hormones: • Follicle Stimulating Hormone (FSH) • Luteinising Hormone (LH) • Oestrogen • Progesterone

whats the inhibitory effect on the following for males: the The Follicle Stimulating Hormone, (FSH) The Luteinising Hormone (LH) and Testosterone (for males) For females, what is the inhibitory effect during the menstrual cycle for each of the following hormones: • Follicle Stimulating Hormone (FSH) • Luteinising Hormone (LH) • Oestrogen • Progesterone

Body Structures & Functions Updated

13th Edition

ISBN:9780357191606

Author:Scott

Publisher:Scott

Chapter21: Reproductive System

Section: Chapter Questions

Problem 4RQ

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Figure 43.17 Which of the following statements about the menstrual cycle is false? Progesterone levels rise during the luteal phase of the ovarian cycle and the secretory phase of the uterine cycle. Menstruation occurs just after LH and FSH levels peak. Menstruation occurs after progesterone levels drop. Estrogen levels rise before ovulation, while progesterone levels rise after.
At what time in the menstrual cycle is the level of thefollowing hormones high, and what is the effect of thiselevation? (1) LH, (2) progesterone, (3) estrogen, and(4) FSH
Which of the following causes the bleeding (menstruation) during the menstrual cycle? Reduced release of oxytocin which causes the uterine muscles to relax Increased release of estrogen (estradiol) from the ovaries that simulates the uterine muscles to contract Reduced release of progesterone from the ovaries Increased release of progesterone leading to blood clots
If the ovum is not fertilized, the corpus luteum regresses, and the endometrium sloughs off to result in the first day of menstrual bleeding. The latter event would be duplicated, even if fertilization occurred, if receptors for which of the following hormones were occupied by an antagonist? A) Dehydroepiandrosterone B) Estradiol C ) Estriol D) Estrone E) Progesterone
Sexual arousal results in a generally positive sympathetic response, e.g. increased heart rate, increased breathing rate and depth, etc. How is it, then, that erection can occur if sympathetic activity causes vasoconstriction and prevents blood flow into the vascular spaces of the penis?
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.
Human chronic gonadotrophin (hCG) hormone produced by the fertilized egg in order to maintain elevated levels of estrogen and progesterone. hCG is also used to induce ovulation during IVF procedures and is known to stimulate the production of testosterone in the testes. Which of the following hormones has a similar function as hCG? A. LH B. Estrogen C. Inhibin D. FSH
The hormones FSH and LH are more active during the first half of the menstrual cycle. Based on the events of the calendar and the diagram on page 4, what role do these hormones likely serve?
The primary purpose of gonadotropin-releasing hormone (GnRH) is to stimulate the : Breakdown of the endometrium in the menstrual flow . Development of the woman's breasts for lactation . Secretion of follicle stimulating hormone (FSH) and luteinizing hormone (LH ) from the anterior pituitary gland . Growth of pubic and axillary hair .
Describe 4 factions of progesterone during the menstrual cycle.
Unlike male gonadotropins, female gonadotropins are able to promote the development of a single optimal dominant follicle during most cycles with the release of a single gamete from an LH surge and then optimization of the uterine environment for implantation. To understand pathologies in this complex system, one must understand the ideal steps within the normal menstrual cycle. Which of the following statements best describes the role of FSH in menstruation? O FSH induces granulosa cell LH receptors within the dominant follicle. O FSH stimulates follicular growth only in the early preantral stage. ( ) FSH stimulates granulosa cell androgen production. O FSH increases its own receptor numbers on theca cells. O FSH induces theca cell aromatase.
Which of the following statements is NOT true concerning the hormonal control over the male reproductive system? These hormones are involved in a negative feedback relationship The hypothalamus secretes a hormone called gonadotropin-releasing hormone Luteinizing hormone controls the production of sperm in the seminiferous tubules Follicle-stimulating hormone and luteinizing hormone are present in both males and females The interstitial cells produce testosterone